161434776 has 32 divisors (see below), whose sum is σ = 404282160. Its totient is φ = 53718912.

The previous prime is 161434747. The next prime is 161434783. The reversal of 161434776 is 677434161.

161434776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161434776² = 52122373804340352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 9226 + ... + 20198.

Almost surely, 2^161434776 is an apocalyptic number.

It is an amenable number.

161434776 is an abundant number, since it is smaller than the sum of its proper divisors (242847384).

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

161434776 is a wasteful number, since it uses less digits than its factorization.

161434776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595 (or 11591 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 161434776 is about 12705.6985640302. The cubic root of 161434776 is about 544.5014389622.

The spelling of 161434776 in words is "one hundred sixty-one million, four hundred thirty-four thousand, seven hundred seventy-six".