508131693 has 12 divisors (see below), whose sum is σ = 753805468. Its totient is φ = 329598720.

The previous prime is 508131691. The next prime is 508131697. The reversal of 508131693 is 396131805.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 337750884 + 170380809 = 18378^2 + 13053^2 .

It is not a de Polignac number, because 508131693 - 2¹ = 508131691 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 (508131691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 762628 + ... + 763293.

Almost surely, 2^508131693 is an apocalyptic number.

It is an amenable number.

508131693 is a deficient number, since it is larger than the sum of its proper divisors (245673775).

508131693 is a wasteful number, since it uses less digits than its factorization.

508131693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525964 (or 1525961 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 508131693 is about 22541.7766158748. The cubic root of 508131693 is about 797.9801613776.

The spelling of 508131693 in words is "five hundred eight million, one hundred thirty-one thousand, six hundred ninety-three".