136189968 has 40 divisors (see below), whose sum is σ = 356652768. Its totient is φ = 44773632.

The previous prime is 136189961. The next prime is 136189993. The reversal of 136189968 is 869981631.

It is a self number, because there is not a number n which added to its sum of digits gives 136189968.

It is not an unprimeable number, because it can be changed into a prime (136189961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15930 + ... + 22937.

Almost surely, 2^136189968 is an apocalyptic number.

It is an amenable number.

136189968 is an abundant number, since it is smaller than the sum of its proper divisors (220462800).

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

136189968 is a wasteful number, since it uses less digits than its factorization.

136189968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38951 (or 38945 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 136189968 is about 11670.0457582650. The cubic root of 136189968 is about 514.4956485072.

The spelling of 136189968 in words is "one hundred thirty-six million, one hundred eighty-nine thousand, nine hundred sixty-eight".