160977591 has 8 divisors (see below), whose sum is σ = 238485360. Its totient is φ = 107318376.

The previous prime is 160977569. The next prime is 160977623. The reversal of 160977591 is 195779061.

160977591 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 160977591 - 2⁶ = 160977527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160977511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2981040 + ... + 2981093.

It is an arithmetic number, because the mean of its divisors is an integer number (29810670).

Almost surely, 2^160977591 is an apocalyptic number.

160977591 is a deficient number, since it is larger than the sum of its proper divisors (77507769).

160977591 is an equidigital number, since it uses as much as digits as its factorization.

160977591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962142 (or 5962136 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The square root of 160977591 is about 12687.6944714160. The cubic root of 160977591 is about 543.9869416830.

The spelling of 160977591 in words is "one hundred sixty million, nine hundred seventy-seven thousand, five hundred ninety-one".