137915693 has 4 divisors (see below), whose sum is σ = 140176668. Its totient is φ = 135654720.

The previous prime is 137915689. The next prime is 137915707. The reversal of 137915693 is 396519731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20994724 + 116920969 = 4582^2 + 10813^2 .

It is a cyclic number.

It is not a de Polignac number, because 137915693 - 2² = 137915689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137915633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130396 + ... + 1130517.

It is an arithmetic number, because the mean of its divisors is an integer number (35044167).

Almost surely, 2^137915693 is an apocalyptic number.

It is an amenable number.

137915693 is a deficient number, since it is larger than the sum of its proper divisors (2260975).

137915693 is an equidigital number, since it uses as much as digits as its factorization.

137915693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260974.

The product of its digits is 153090, while the sum is 44.

The square root of 137915693 is about 11743.7512320383. The cubic root of 137915693 is about 516.6596697399.

The spelling of 137915693 in words is "one hundred thirty-seven million, nine hundred fifteen thousand, six hundred ninety-three".