161086938 has 32 divisors (see below), whose sum is σ = 334143360. Its totient is φ = 51710400.

The previous prime is 161086931. The next prime is 161086957. The reversal of 161086938 is 839680161.

It is a self number, because there is not a number n which added to its sum of digits gives 161086938.

It is not an unprimeable number, because it can be changed into a prime (161086931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83788 + ... + 85688.

It is an arithmetic number, because the mean of its divisors is an integer number (10441980).

Almost surely, 2^161086938 is an apocalyptic number.

161086938 is an abundant number, since it is smaller than the sum of its proper divisors (173056422).

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

161086938 is a wasteful number, since it uses less digits than its factorization.

161086938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 161086938 is about 12692.0029152219. The cubic root of 161086938 is about 544.1100848618.

The spelling of 161086938 in words is "one hundred sixty-one million, eighty-six thousand, nine hundred thirty-eight".