38140681597 has 2 divisors, whose sum is σ = 38140681598. Its totient is φ = 38140681596.

The previous prime is 38140681559. The next prime is 38140681609. The reversal of 38140681597 is 79518604183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37287223801 + 853457796 = 193099^2 + 29214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38140681597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38140681097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19070340798 + 19070340799.

It is an arithmetic number, because the mean of its divisors is an integer number (19070340799).

Almost surely, 2^38140681597 is an apocalyptic number.

It is an amenable number.

38140681597 is a deficient number, since it is larger than the sum of its proper divisors (1).

38140681597 is an equidigital number, since it uses as much as digits as its factorization.

38140681597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 38140681597 in words is "thirty-eight billion, one hundred forty million, six hundred eighty-one thousand, five hundred ninety-seven".