136788813 has 48 divisors (see below), whose sum is σ = 233715456. Its totient is φ = 75479040.

The previous prime is 136788803. The next prime is 136788829. The reversal of 136788813 is 318887631.

136788813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136788813 - 2⁵ = 136788781 is a prime.

It is a super-2 number, since 2×136788813² = 37422358723897938, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136788803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236781 + ... + 237357.

It is an arithmetic number, because the mean of its divisors is an integer number (4869072).

Almost surely, 2^136788813 is an apocalyptic number.

It is an amenable number.

136788813 is a deficient number, since it is larger than the sum of its proper divisors (96926643).

136788813 is a wasteful number, since it uses less digits than its factorization.

136788813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 711 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 136788813 is about 11695.6749698339. The cubic root of 136788813 is about 515.2486473299.

The spelling of 136788813 in words is "one hundred thirty-six million, seven hundred eighty-eight thousand, eight hundred thirteen".