136718988 has 24 divisors (see below), whose sum is σ = 364584192. Its totient is φ = 39062544.

The previous prime is 136718971. The next prime is 136719001. The reversal of 136718988 is 889817631.

It is a self number, because there is not a number n which added to its sum of digits gives 136718988.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813720 + ... + 813887.

It is an arithmetic number, because the mean of its divisors is an integer number (15191008).

Almost surely, 2^136718988 is an apocalyptic number.

It is an amenable number.

136718988 is an abundant number, since it is smaller than the sum of its proper divisors (227865204).

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

136718988 is a wasteful number, since it uses less digits than its factorization.

136718988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627621 (or 1627619 counting only the distinct ones).

The product of its digits is 580608, while the sum is 51.

The square root of 136718988 is about 11692.6895109722. The cubic root of 136718988 is about 515.1609614065.

The spelling of 136718988 in words is "one hundred thirty-six million, seven hundred eighteen thousand, nine hundred eighty-eight".