161635032 has 48 divisors (see below), whose sum is σ = 471438240. Its totient is φ = 49733568.

The previous prime is 161634989. The next prime is 161635037. The reversal of 161635032 is 230536161.

It is a super-2 number, since 2×161635032² = 52251767139282048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161634987 and 161635005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161635037) 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 11 ways as a sum of consecutive naturals, for example, 85408 + ... + 87279.

It is an arithmetic number, because the mean of its divisors is an integer number (9821630).

Almost surely, 2^161635032 is an apocalyptic number.

161635032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161635032 is an abundant number, since it is smaller than the sum of its proper divisors (309803208).

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

161635032 is a wasteful number, since it uses less digits than its factorization.

161635032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172712 (or 172705 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 161635032 is about 12713.5766800692. The cubic root of 161635032 is about 544.7264929579.

The spelling of 161635032 in words is "one hundred sixty-one million, six hundred thirty-five thousand, thirty-two".