151638979 has 2 divisors, whose sum is σ = 151638980. Its totient is φ = 151638978.

The previous prime is 151638961. The next prime is 151639003. The reversal of 151638979 is 979836151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151638979 - 2¹⁵ = 151606211 is a prime.

It is not a weakly prime, because it can be changed into another prime (151638959) 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, 75819489 + 75819490.

It is an arithmetic number, because the mean of its divisors is an integer number (75819490).

Almost surely, 2^151638979 is an apocalyptic number.

151638979 is a deficient number, since it is larger than the sum of its proper divisors (1).

151638979 is an equidigital number, since it uses as much as digits as its factorization.

151638979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 151638979 is about 12314.1779668803. The cubic root of 151638979 is about 533.2574732815.

It can be divided in two parts, 15163 and 8979, that added together give a palindrome (24142).

The spelling of 151638979 in words is "one hundred fifty-one million, six hundred thirty-eight thousand, nine hundred seventy-nine".