136874291 has 4 divisors (see below), whose sum is σ = 138229584. Its totient is φ = 135519000.

The previous prime is 136874261. The next prime is 136874303. The reversal of 136874291 is 192478631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136874291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136874201) 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, 677495 + ... + 677696.

It is an arithmetic number, because the mean of its divisors is an integer number (34557396).

Almost surely, 2^136874291 is an apocalyptic number.

136874291 is a deficient number, since it is larger than the sum of its proper divisors (1355293).

136874291 is a wasteful number, since it uses less digits than its factorization.

136874291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355292.

The product of its digits is 72576, while the sum is 41.

The square root of 136874291 is about 11699.3286559529. The cubic root of 136874291 is about 515.3559496066.

The spelling of 136874291 in words is "one hundred thirty-six million, eight hundred seventy-four thousand, two hundred ninety-one".