136837899 has 12 divisors (see below), whose sum is σ = 215623512. Its totient is φ = 82932000.

The previous prime is 136837889. The next prime is 136837907. The reversal of 136837899 is 998738631.

It is not a de Polignac number, because 136837899 - 2²⁰ = 135789323 is a prime.

It is a super-2 number, since 2×136837899² = 37449221205468402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136837819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 691002 + ... + 691199.

It is an arithmetic number, because the mean of its divisors is an integer number (17968626).

Almost surely, 2^136837899 is an apocalyptic number.

136837899 is a deficient number, since it is larger than the sum of its proper divisors (78785613).

136837899 is a wasteful number, since it uses less digits than its factorization.

136837899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382218 (or 1382215 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 136837899 is about 11697.7732496403. The cubic root of 136837899 is about 515.3102714494.

The spelling of 136837899 in words is "one hundred thirty-six million, eight hundred thirty-seven thousand, eight hundred ninety-nine".