151179991 has 2 divisors, whose sum is σ = 151179992. Its totient is φ = 151179990.

The previous prime is 151179971. The next prime is 151180033. The reversal of 151179991 is 199971151.

It is a weak prime.

It is an emirp because it is prime and its reverse (199971151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151179991 - 2⁷ = 151179863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151179971) 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, 75589995 + 75589996.

It is an arithmetic number, because the mean of its divisors is an integer number (75589996).

Almost surely, 2^151179991 is an apocalyptic number.

151179991 is a deficient number, since it is larger than the sum of its proper divisors (1).

151179991 is an equidigital number, since it uses as much as digits as its factorization.

151179991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25515, while the sum is 43.

The square root of 151179991 is about 12295.5272762090. The cubic root of 151179991 is about 532.7188999147.

The spelling of 151179991 in words is "one hundred fifty-one million, one hundred seventy-nine thousand, nine hundred ninety-one".