167979913 has 2 divisors, whose sum is σ = 167979914. Its totient is φ = 167979912.

The previous prime is 167979899. The next prime is 167979943. The reversal of 167979913 is 319979761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126157824 + 41822089 = 11232^2 + 6467^2 .

It is a cyclic number.

It is not a de Polignac number, because 167979913 - 2⁵ = 167979881 is a prime.

It is not a weakly prime, because it can be changed into another prime (167979943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83989956 + 83989957.

It is an arithmetic number, because the mean of its divisors is an integer number (83989957).

Almost surely, 2^167979913 is an apocalyptic number.

It is an amenable number.

167979913 is a deficient number, since it is larger than the sum of its proper divisors (1).

167979913 is an equidigital number, since it uses as much as digits as its factorization.

167979913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 52.

The square root of 167979913 is about 12960.7065008047. The cubic root of 167979913 is about 551.7628429275.

The spelling of 167979913 in words is "one hundred sixty-seven million, nine hundred seventy-nine thousand, nine hundred thirteen".