130781693 has 16 divisors (see below), whose sum is σ = 157893120. Its totient is φ = 105819696.

The previous prime is 130781681. The next prime is 130781719. The reversal of 130781693 is 396187031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130781693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130781603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39230 + ... + 42432.

It is an arithmetic number, because the mean of its divisors is an integer number (9868320).

Almost surely, 2^130781693 is an apocalyptic number.

It is an amenable number.

130781693 is a deficient number, since it is larger than the sum of its proper divisors (27111427).

130781693 is a wasteful number, since it uses less digits than its factorization.

130781693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 130781693 is about 11435.9823801893. The cubic root of 130781693 is about 507.5930320361.

The spelling of 130781693 in words is "one hundred thirty million, seven hundred eighty-one thousand, six hundred ninety-three".