38693494131 has 32 divisors (see below), whose sum is σ = 53011238400. Its totient is φ = 25094893824.

The previous prime is 38693494127. The next prime is 38693494141. The reversal of 38693494131 is 13149439683.

It is not a de Polignac number, because 38693494131 - 2² = 38693494127 is a prime.

It is a super-2 number, since 2×38693494131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38693494111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9901680 + ... + 9905586.

It is an arithmetic number, because the mean of its divisors is an integer number (1656601200).

Almost surely, 2^38693494131 is an apocalyptic number.

38693494131 is a deficient number, since it is larger than the sum of its proper divisors (14317744269).

38693494131 is a wasteful number, since it uses less digits than its factorization.

38693494131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475.

The product of its digits is 1679616, while the sum is 51.

The spelling of 38693494131 in words is "thirty-eight billion, six hundred ninety-three million, four hundred ninety-four thousand, one hundred thirty-one".