161845132 has 12 divisors (see below), whose sum is σ = 284795056. Its totient is φ = 80475120.

The previous prime is 161845069. The next prime is 161845147. The reversal of 161845132 is 231548161.

161845132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 161845094 and 161845103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111048 + ... + 112495.

Almost surely, 2^161845132 is an apocalyptic number.

It is an amenable number.

161845132 is a deficient number, since it is larger than the sum of its proper divisors (122949924).

161845132 is a wasteful number, since it uses less digits than its factorization.

161845132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223728 (or 223726 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 161845132 is about 12721.8368170638. The cubic root of 161845132 is about 544.9624102234.

It can be divided in two parts, 16184 and 5132, that added together give a square (21316 = 146²).

The spelling of 161845132 in words is "one hundred sixty-one million, eight hundred forty-five thousand, one hundred thirty-two".