161374938 has 16 divisors (see below), whose sum is σ = 323144640. Its totient is φ = 53725856.

The previous prime is 161374921. The next prime is 161374949. The reversal of 161374938 is 839473161.

It is a super-2 number, since 2×161374938² = 52083741229007688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161374938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10995 + ... + 21062.

It is an arithmetic number, because the mean of its divisors is an integer number (20196540).

Almost surely, 2^161374938 is an apocalyptic number.

161374938 is an abundant number, since it is smaller than the sum of its proper divisors (161769702).

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

161374938 is a wasteful number, since it uses less digits than its factorization.

161374938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32901.

The product of its digits is 108864, while the sum is 42.

The square root of 161374938 is about 12703.3435756103. The cubic root of 161374938 is about 544.4341550217.

The spelling of 161374938 in words is "one hundred sixty-one million, three hundred seventy-four thousand, nine hundred thirty-eight".