306157080138 has 64 divisors (see below), whose sum is σ = 754035996672. Its totient is φ = 80699878080.

The previous prime is 306157080101. The next prime is 306157080139. The reversal of 306157080138 is 831080751603.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 306157080138.

It is not an unprimeable number, because it can be changed into a prime (306157080139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 833995 + ... + 1143617.

It is an arithmetic number, because the mean of its divisors is an integer number (11781812448).

Almost surely, 2^306157080138 is an apocalyptic number.

306157080138 is an abundant number, since it is smaller than the sum of its proper divisors (447878916534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306157080138 is a wasteful number, since it uses less digits than its factorization.

306157080138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311459.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 306157080138 in words is "three hundred six billion, one hundred fifty-seven million, eighty thousand, one hundred thirty-eight".