38857047613 has 2 divisors, whose sum is σ = 38857047614. Its totient is φ = 38857047612.

The previous prime is 38857047599. The next prime is 38857047689. The reversal of 38857047613 is 31674075883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36909325924 + 1947721689 = 192118^2 + 44133^2 .

It is a cyclic number.

It is not a de Polignac number, because 38857047613 - 2¹³ = 38857039421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38857047013) 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 as a sum of consecutive naturals, namely, 19428523806 + 19428523807.

It is an arithmetic number, because the mean of its divisors is an integer number (19428523807).

Almost surely, 2^38857047613 is an apocalyptic number.

It is an amenable number.

38857047613 is a deficient number, since it is larger than the sum of its proper divisors (1).

38857047613 is an equidigital number, since it uses as much as digits as its factorization.

38857047613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 38857047613 in words is "thirty-eight billion, eight hundred fifty-seven million, forty-seven thousand, six hundred thirteen".