38956690847 has 2 divisors, whose sum is σ = 38956690848. Its totient is φ = 38956690846.

The previous prime is 38956690837. The next prime is 38956690909. The reversal of 38956690847 is 74809665983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38956690847 - 2²⁸ = 38688255391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38956690807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19478345423 + 19478345424.

It is an arithmetic number, because the mean of its divisors is an integer number (19478345424).

Almost surely, 2^38956690847 is an apocalyptic number.

38956690847 is a deficient number, since it is larger than the sum of its proper divisors (1).

38956690847 is an equidigital number, since it uses as much as digits as its factorization.

38956690847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 38956690847 in words is "thirty-eight billion, nine hundred fifty-six million, six hundred ninety thousand, eight hundred forty-seven".