1232161632 has 336 divisors, whose sum is σ = 4164592320. Its totient is φ = 355332096.

The previous prime is 1232161621. The next prime is 1232161639. The reversal of 1232161632 is 2361612321.

1232161632 is a `hidden beast` number, since 1 + 2 + 3 + 21 + 6 + 1 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1232161596 and 1232161605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232161639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5155369 + ... + 5155607.

It is an arithmetic number, because the mean of its divisors is an integer number (12394620).

Almost surely, 2^1232161632 is an apocalyptic number.

1232161632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232161632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082296160).

1232161632 is an abundant number, since it is smaller than the sum of its proper divisors (2932430688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1232161632 is a wasteful number, since it uses less digits than its factorization.

1232161632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 274 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1232161632 is about 35102.1599335426. The cubic root of 1232161632 is about 1072.0685613683.

Adding to 1232161632 its reverse (2361612321), we get a palindrome (3593773953).

The spelling of 1232161632 in words is "one billion, two hundred thirty-two million, one hundred sixty-one thousand, six hundred thirty-two".