37998874457 has 2 divisors, whose sum is σ = 37998874458. Its totient is φ = 37998874456.

The previous prime is 37998874423. The next prime is 37998874483. The reversal of 37998874457 is 75447889973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33931113616 + 4067760841 = 184204^2 + 63779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37998874457 is a prime.

It is not a weakly prime, because it can be changed into another prime (37998873457) 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, 18999437228 + 18999437229.

It is an arithmetic number, because the mean of its divisors is an integer number (18999437229).

Almost surely, 2^37998874457 is an apocalyptic number.

It is an amenable number.

37998874457 is a deficient number, since it is larger than the sum of its proper divisors (1).

37998874457 is an equidigital number, since it uses as much as digits as its factorization.

37998874457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 426746880, while the sum is 71.

The spelling of 37998874457 in words is "thirty-seven billion, nine hundred ninety-eight million, eight hundred seventy-four thousand, four hundred fifty-seven".