161044632 has 128 divisors (see below), whose sum is σ = 523353600. Its totient is φ = 44924544.

The previous prime is 161044603. The next prime is 161044633. The reversal of 161044632 is 236440161.

161044632 is a `hidden beast` number, since 1 + 610 + 4 + 46 + 3 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 161044596 and 161044605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161044633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63778 + ... + 66254.

It is an arithmetic number, because the mean of its divisors is an integer number (4088700).

Almost surely, 2^161044632 is an apocalyptic number.

161044632 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 161044632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261676800).

161044632 is an abundant number, since it is smaller than the sum of its proper divisors (362308968).

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

161044632 is a wasteful number, since it uses less digits than its factorization.

161044632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 161044632 is about 12690.3361657601. The cubic root of 161044632 is about 544.0624477763.

Adding to 161044632 its reverse (236440161), we get a palindrome (397484793).

It can be divided in two parts, 16104 and 4632, that added together give a 4-th power (20736 = 12⁴).

The spelling of 161044632 in words is "one hundred sixty-one million, forty-four thousand, six hundred thirty-two".