38647674691 has 2 divisors, whose sum is σ = 38647674692. Its totient is φ = 38647674690.

The previous prime is 38647674613. The next prime is 38647674701. The reversal of 38647674691 is 19647674683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38647674691 - 2⁷ = 38647674563 is a prime.

It is not a weakly prime, because it can be changed into another prime (38647674601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19323837345 + 19323837346.

It is an arithmetic number, because the mean of its divisors is an integer number (19323837346).

Almost surely, 2^38647674691 is an apocalyptic number.

38647674691 is a deficient number, since it is larger than the sum of its proper divisors (1).

38647674691 is an equidigital number, since it uses as much as digits as its factorization.

38647674691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 61.

The spelling of 38647674691 in words is "thirty-eight billion, six hundred forty-seven million, six hundred seventy-four thousand, six hundred ninety-one".