161937153 has 12 divisors (see below), whose sum is σ = 267324928. Its totient is φ = 92535480.

The previous prime is 161937119. The next prime is 161937161. The reversal of 161937153 is 351739161.

161937153 is a `hidden beast` number, since 1 + 619 + 37 + 1 + 5 + 3 = 666.

161937153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161937153 - 2⁸ = 161936897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161937103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285153 + ... + 1285278.

Almost surely, 2^161937153 is an apocalyptic number.

It is an amenable number.

161937153 is a deficient number, since it is larger than the sum of its proper divisors (105387775).

161937153 is a wasteful number, since it uses less digits than its factorization.

161937153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570444 (or 2570441 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 161937153 is about 12725.4529585394. The cubic root of 161937153 is about 545.0656745478.

The spelling of 161937153 in words is "one hundred sixty-one million, nine hundred thirty-seven thousand, one hundred fifty-three".