161915676 has 48 divisors (see below), whose sum is σ = 424564224. Its totient is φ = 47653056.

The previous prime is 161915669. The next prime is 161915681. The reversal of 161915676 is 676519161.

161915676 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161915676² = 52433372269073952, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 18976 + ... + 26151.

It is an arithmetic number, because the mean of its divisors is an integer number (8845088).

Almost surely, 2^161915676 is an apocalyptic number.

It is an amenable number.

161915676 is an abundant number, since it is smaller than the sum of its proper divisors (262648548).

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

161915676 is a wasteful number, since it uses less digits than its factorization.

161915676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45170 (or 45168 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 161915676 is about 12724.6090706159. The cubic root of 161915676 is about 545.0415769420.

The spelling of 161915676 in words is "one hundred sixty-one million, nine hundred fifteen thousand, six hundred seventy-six".