167670491 has 2 divisors, whose sum is σ = 167670492. Its totient is φ = 167670490.

The previous prime is 167670457. The next prime is 167670509. The reversal of 167670491 is 194076761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167670491 - 2⁶ = 167670427 is a prime.

It is a super-2 number, since 2×167670491² = 56226787104362162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167670401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83835245 + 83835246.

It is an arithmetic number, because the mean of its divisors is an integer number (83835246).

Almost surely, 2^167670491 is an apocalyptic number.

167670491 is a deficient number, since it is larger than the sum of its proper divisors (1).

167670491 is an equidigital number, since it uses as much as digits as its factorization.

167670491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 167670491 is about 12948.7640722966. The cubic root of 167670491 is about 551.4238490274.

The spelling of 167670491 in words is "one hundred sixty-seven million, six hundred seventy thousand, four hundred ninety-one".