160899931 has 2 divisors, whose sum is σ = 160899932. Its totient is φ = 160899930.

The previous prime is 160899919. The next prime is 160899989. The reversal of 160899931 is 139998061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160899931 - 2¹¹ = 160897883 is a prime.

It is a super-2 number, since 2×160899931² = 51777575591609522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (160899901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80449965 + 80449966.

It is an arithmetic number, because the mean of its divisors is an integer number (80449966).

Almost surely, 2^160899931 is an apocalyptic number.

160899931 is a deficient number, since it is larger than the sum of its proper divisors (1).

160899931 is an equidigital number, since it uses as much as digits as its factorization.

160899931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 160899931 is about 12684.6336565153. The cubic root of 160899931 is about 543.8994495441.

The spelling of 160899931 in words is "one hundred sixty million, eight hundred ninety-nine thousand, nine hundred thirty-one".