161020938 has 16 divisors (see below), whose sum is σ = 346814496. Its totient is φ = 49544880.

The previous prime is 161020921. The next prime is 161020949. The reversal of 161020938 is 839020161.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1032108 + ... + 1032263.

It is an arithmetic number, because the mean of its divisors is an integer number (21675906).

Almost surely, 2^161020938 is an apocalyptic number.

161020938 is an abundant number, since it is smaller than the sum of its proper divisors (185793558).

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

161020938 is a wasteful number, since it uses less digits than its factorization.

161020938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064389.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 161020938 is about 12689.4025864104. The cubic root of 161020938 is about 544.0357643910.

The spelling of 161020938 in words is "one hundred sixty-one million, twenty thousand, nine hundred thirty-eight".