167979451 has 2 divisors, whose sum is σ = 167979452. Its totient is φ = 167979450.

The previous prime is 167979391. The next prime is 167979473. The reversal of 167979451 is 154979761.

It is a strong prime.

It is an emirp because it is prime and its reverse (154979761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167979451 - 2⁹ = 167978939 is a prime.

It is a super-2 number, since 2×167979451² = 56434191916522802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 167979395 and 167979404.

It is not a weakly prime, because it can be changed into another prime (167979151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83989725 + 83989726.

It is an arithmetic number, because the mean of its divisors is an integer number (83989726).

Almost surely, 2^167979451 is an apocalyptic number.

167979451 is a deficient number, since it is larger than the sum of its proper divisors (1).

167979451 is an equidigital number, since it uses as much as digits as its factorization.

167979451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 167979451 is about 12960.6886776899. The cubic root of 167979451 is about 551.7623370839.

The spelling of 167979451 in words is "one hundred sixty-seven million, nine hundred seventy-nine thousand, four hundred fifty-one".