38318910139 has 2 divisors, whose sum is σ = 38318910140. Its totient is φ = 38318910138.

The previous prime is 38318910053. The next prime is 38318910143. The reversal of 38318910139 is 93101981383.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38318910139 - 2¹¹ = 38318908091 is a prime.

It is not a weakly prime, because it can be changed into another prime (38318950139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19159455069 + 19159455070.

It is an arithmetic number, because the mean of its divisors is an integer number (19159455070).

Almost surely, 2^38318910139 is an apocalyptic number.

38318910139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38318910139 is an equidigital number, since it uses as much as digits as its factorization.

38318910139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 38318910139 in words is "thirty-eight billion, three hundred eighteen million, nine hundred ten thousand, one hundred thirty-nine".