38317438261 has 2 divisors, whose sum is σ = 38317438262. Its totient is φ = 38317438260.

The previous prime is 38317438253. The next prime is 38317438297. The reversal of 38317438261 is 16283471383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37896408900 + 421029361 = 194670^2 + 20519^2 .

It is a cyclic number.

It is not a de Polignac number, because 38317438261 - 2³ = 38317438253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38317438361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19158719130 + 19158719131.

It is an arithmetic number, because the mean of its divisors is an integer number (19158719131).

Almost surely, 2^38317438261 is an apocalyptic number.

It is an amenable number.

38317438261 is a deficient number, since it is larger than the sum of its proper divisors (1).

38317438261 is an equidigital number, since it uses as much as digits as its factorization.

38317438261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The spelling of 38317438261 in words is "thirty-eight billion, three hundred seventeen million, four hundred thirty-eight thousand, two hundred sixty-one".