161929896 has 32 divisors (see below), whose sum is σ = 428639040. Its totient is φ = 50801408.

The previous prime is 161929883. The next prime is 161929907. The reversal of 161929896 is 698929161.

161929896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 198036 + ... + 198851.

It is an arithmetic number, because the mean of its divisors is an integer number (13394970).

Almost surely, 2^161929896 is an apocalyptic number.

It is an amenable number.

161929896 is an abundant number, since it is smaller than the sum of its proper divisors (266709144).

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

161929896 is a wasteful number, since it uses less digits than its factorization.

161929896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396913 (or 396909 counting only the distinct ones).

The product of its digits is 419904, while the sum is 51.

The square root of 161929896 is about 12725.1678181468. The cubic root of 161929896 is about 545.0575322930.

The spelling of 161929896 in words is "one hundred sixty-one million, nine hundred twenty-nine thousand, eight hundred ninety-six".