161737074 has 20 divisors (see below), whose sum is σ = 362411214. Its totient is φ = 53912304.

The previous prime is 161737073. The next prime is 161737111. The reversal of 161737074 is 470737161.

161737074 is a `hidden beast` number, since 1 + 617 + 37 + 0 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 132089049 + 29648025 = 11493^2 + 5445^2 .

It is a super-2 number, since 2×161737074² = 52317762212162952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161737073) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 499027 + ... + 499350.

Almost surely, 2^161737074 is an apocalyptic number.

161737074 is an abundant number, since it is smaller than the sum of its proper divisors (200674140).

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

161737074 is an equidigital number, since it uses as much as digits as its factorization.

161737074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998391 (or 998382 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 161737074 is about 12717.5891583271. The cubic root of 161737074 is about 544.8410994824.

The spelling of 161737074 in words is "one hundred sixty-one million, seven hundred thirty-seven thousand, seventy-four".