1201655232 has 168 divisors, whose sum is σ = 3585179520. Its totient is φ = 384399360.

The previous prime is 1201655227. The next prime is 1201655239. The reversal of 1201655232 is 2325561021.

It is a happy number.

1201655232 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 655 + 2 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1201655196 and 1201655205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201655239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3088894 + ... + 3089282.

Almost surely, 2^1201655232 is an apocalyptic number.

1201655232 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 1201655232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792589760).

1201655232 is an abundant number, since it is smaller than the sum of its proper divisors (2383524288).

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

1201655232 is a wasteful number, since it uses less digits than its factorization.

1201655232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1201655232 is about 34664.8991344270. The cubic root of 1201655232 is about 1063.1469409459.

The spelling of 1201655232 in words is "one billion, two hundred one million, six hundred fifty-five thousand, two hundred thirty-two".