38731563413 has 2 divisors, whose sum is σ = 38731563414. Its totient is φ = 38731563412.

The previous prime is 38731563323. The next prime is 38731563433. The reversal of 38731563413 is 31436513783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37978993924 + 752569489 = 194882^2 + 27433^2 .

It is a cyclic number.

It is not a de Polignac number, because 38731563413 - 2¹⁸ = 38731301269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38731563433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19365781706 + 19365781707.

It is an arithmetic number, because the mean of its divisors is an integer number (19365781707).

Almost surely, 2^38731563413 is an apocalyptic number.

It is an amenable number.

38731563413 is a deficient number, since it is larger than the sum of its proper divisors (1).

38731563413 is an equidigital number, since it uses as much as digits as its factorization.

38731563413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The spelling of 38731563413 in words is "thirty-eight billion, seven hundred thirty-one million, five hundred sixty-three thousand, four hundred thirteen".