167799491 has 2 divisors, whose sum is σ = 167799492. Its totient is φ = 167799490.

The previous prime is 167799461. The next prime is 167799493. The reversal of 167799491 is 194997761.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167799491 is a prime.

Together with 167799493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167799493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83899745 + 83899746.

It is an arithmetic number, because the mean of its divisors is an integer number (83899746).

Almost surely, 2^167799491 is an apocalyptic number.

167799491 is a deficient number, since it is larger than the sum of its proper divisors (1).

167799491 is an equidigital number, since it uses as much as digits as its factorization.

167799491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 53.

The square root of 167799491 is about 12953.7442849548. The cubic root of 167799491 is about 551.5652283906.

The spelling of 167799491 in words is "one hundred sixty-seven million, seven hundred ninety-nine thousand, four hundred ninety-one".