161539032 has 64 divisors (see below), whose sum is σ = 429429600. Its totient is φ = 50462720.

The previous prime is 161539009. The next prime is 161539033. The reversal of 161539032 is 230935161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161539033) 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 15 ways as a sum of consecutive naturals, for example, 113944 + ... + 115352.

Almost surely, 2^161539032 is an apocalyptic number.

161539032 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 161539032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214714800).

161539032 is an abundant number, since it is smaller than the sum of its proper divisors (267890568).

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

161539032 is a wasteful number, since it uses less digits than its factorization.

161539032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 161539032 is about 12709.8006278619. The cubic root of 161539032 is about 544.6186283466.

The spelling of 161539032 in words is "one hundred sixty-one million, five hundred thirty-nine thousand, thirty-two".