161845044 has 24 divisors (see below), whose sum is σ = 379904448. Its totient is φ = 53624640.

The previous prime is 161845039. The next prime is 161845069. The reversal of 161845044 is 440548161.

161845044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161844996 and 161845014.

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, 38377 + ... + 42384.

It is an arithmetic number, because the mean of its divisors is an integer number (15829352).

Almost surely, 2^161845044 is an apocalyptic number.

It is an amenable number.

161845044 is an abundant number, since it is smaller than the sum of its proper divisors (218059404).

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

161845044 is a wasteful number, since it uses less digits than its factorization.

161845044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80935 (or 80933 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 161845044 is about 12721.8333584433. The cubic root of 161845044 is about 544.9623114526.

The spelling of 161845044 in words is "one hundred sixty-one million, eight hundred forty-five thousand, forty-four".