167473991 has 2 divisors, whose sum is σ = 167473992. Its totient is φ = 167473990.

The previous prime is 167473979. The next prime is 167473993. The reversal of 167473991 is 199374761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167473991 - 2¹⁴ = 167457607 is a prime.

It is a super-2 number, since 2×167473991² = 56095075322936162, which contains 22 as substring.

Together with 167473993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167473993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83736995 + 83736996.

It is an arithmetic number, because the mean of its divisors is an integer number (83736996).

Almost surely, 2^167473991 is an apocalyptic number.

167473991 is a deficient number, since it is larger than the sum of its proper divisors (1).

167473991 is an equidigital number, since it uses as much as digits as its factorization.

167473991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 167473991 is about 12941.1742512030. The cubic root of 167473991 is about 551.2083526656.

The spelling of 167473991 in words is "one hundred sixty-seven million, four hundred seventy-three thousand, nine hundred ninety-one".