161172268 has 12 divisors (see below), whose sum is σ = 283016160. Its totient is φ = 80310512.

The previous prime is 161172241. The next prime is 161172301. The reversal of 161172268 is 862271161.

161172268 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 3 ways as a sum of consecutive naturals, for example, 67588 + ... + 69931.

It is an arithmetic number, because the mean of its divisors is an integer number (23584680).

Almost surely, 2^161172268 is an apocalyptic number.

It is an amenable number.

161172268 is a deficient number, since it is larger than the sum of its proper divisors (121843892).

161172268 is a wasteful number, since it uses less digits than its factorization.

161172268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137816 (or 137814 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 161172268 is about 12695.3640357416. The cubic root of 161172268 is about 544.2061421389.

The spelling of 161172268 in words is "one hundred sixty-one million, one hundred seventy-two thousand, two hundred sixty-eight".