161895152 has 20 divisors (see below), whose sum is σ = 317453640. Its totient is φ = 79971648.

The previous prime is 161895133. The next prime is 161895163. The reversal of 161895152 is 251598161.

161895152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161895152² = 52420080482206208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59627 + ... + 62282.

It is an arithmetic number, because the mean of its divisors is an integer number (15872682).

Almost surely, 2^161895152 is an apocalyptic number.

It is an amenable number.

161895152 is a deficient number, since it is larger than the sum of its proper divisors (155558488).

161895152 is a wasteful number, since it uses less digits than its factorization.

161895152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122000 (or 121994 counting only the distinct ones).

The product of its digits is 21600, while the sum is 38.

The square root of 161895152 is about 12723.8025762741. The cubic root of 161895152 is about 545.0185466292.

The spelling of 161895152 in words is "one hundred sixty-one million, eight hundred ninety-five thousand, one hundred fifty-two".