161318924 has 24 divisors (see below), whose sum is σ = 304369968. Its totient is φ = 74370240.

The previous prime is 161318903. The next prime is 161318939. The reversal of 161318924 is 429813161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85754 + ... + 87614.

It is an arithmetic number, because the mean of its divisors is an integer number (12682082).

Almost surely, 2^161318924 is an apocalyptic number.

It is an amenable number.

161318924 is a deficient number, since it is larger than the sum of its proper divisors (143051044).

161318924 is a wasteful number, since it uses less digits than its factorization.

161318924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545 (or 3543 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 161318924 is about 12701.1386891097. The cubic root of 161318924 is about 544.3711558468.

The spelling of 161318924 in words is "one hundred sixty-one million, three hundred eighteen thousand, nine hundred twenty-four".