151905979 has 4 divisors (see below), whose sum is σ = 156011584. Its totient is φ = 147800376.

The previous prime is 151905881. The next prime is 151905989. The reversal of 151905979 is 979509151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151905979 - 2⁷ = 151905851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151905989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052747 + ... + 2052820.

It is an arithmetic number, because the mean of its divisors is an integer number (39002896).

Almost surely, 2^151905979 is an apocalyptic number.

151905979 is a deficient number, since it is larger than the sum of its proper divisors (4105605).

151905979 is an equidigital number, since it uses as much as digits as its factorization.

151905979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105604.

The product of its (nonzero) digits is 127575, while the sum is 46.

The square root of 151905979 is about 12325.0143610464. The cubic root of 151905979 is about 533.5702694205.

The spelling of 151905979 in words is "one hundred fifty-one million, nine hundred five thousand, nine hundred seventy-nine".