161037900 has 54 divisors (see below), whose sum is σ = 504767172. Its totient is φ = 42943200.

The previous prime is 161037871. The next prime is 161037911. The reversal of 161037900 is 9730161.

161037900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 88566 + ... + 90365.

Almost surely, 2^161037900 is an apocalyptic number.

161037900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161037900 is an abundant number, since it is smaller than the sum of its proper divisors (343729272).

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

161037900 is a wasteful number, since it uses less digits than its factorization.

161037900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178951 (or 178941 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 161037900 is about 12690.0709217876. The cubic root of 161037900 is about 544.0548666907.

The spelling of 161037900 in words is "one hundred sixty-one million, thirty-seven thousand, nine hundred".