161965032 has 32 divisors (see below), whose sum is σ = 412555680. Its totient is φ = 52969280.

The previous prime is 161965019. The next prime is 161965033. The reversal of 161965032 is 230569161.

It is a happy number.

It is a super-2 number, since 2×161965032² = 52465343181522048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161964984 and 161965002.

It is not an unprimeable number, because it can be changed into a prime (161965033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62394 + ... + 64937.

It is an arithmetic number, because the mean of its divisors is an integer number (12892365).

Almost surely, 2^161965032 is an apocalyptic number.

161965032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161965032 is an abundant number, since it is smaller than the sum of its proper divisors (250590648).

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

161965032 is a wasteful number, since it uses less digits than its factorization.

161965032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127393 (or 127389 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 161965032 is about 12726.5483144488. The cubic root of 161965032 is about 545.0969521427.

The spelling of 161965032 in words is "one hundred sixty-one million, nine hundred sixty-five thousand, thirty-two".