37975998997 has 2 divisors, whose sum is σ = 37975998998. Its totient is φ = 37975998996.

The previous prime is 37975998989. The next prime is 37975999069. The reversal of 37975998997 is 79989957973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24523246801 + 13452752196 = 156599^2 + 115986^2 .

It is an emirp because it is prime and its reverse (79989957973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37975998997 - 2³ = 37975998989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37975998997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37975998917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18987999498 + 18987999499.

It is an arithmetic number, because the mean of its divisors is an integer number (18987999499).

Almost surely, 2^37975998997 is an apocalyptic number.

It is an amenable number.

37975998997 is a deficient number, since it is larger than the sum of its proper divisors (1).

37975998997 is an equidigital number, since it uses as much as digits as its factorization.

37975998997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430456840, while the sum is 82.

The spelling of 37975998997 in words is "thirty-seven billion, nine hundred seventy-five million, nine hundred ninety-eight thousand, nine hundred ninety-seven".