37493392991 has 2 divisors, whose sum is σ = 37493392992. Its totient is φ = 37493392990.

The previous prime is 37493392973. The next prime is 37493392997. The reversal of 37493392991 is 19929339473.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37493392991 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37493392991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37493392997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18746696495 + 18746696496.

It is an arithmetic number, because the mean of its divisors is an integer number (18746696496).

Almost surely, 2^37493392991 is an apocalyptic number.

37493392991 is a deficient number, since it is larger than the sum of its proper divisors (1).

37493392991 is an equidigital number, since it uses as much as digits as its factorization.

37493392991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 59.

The spelling of 37493392991 in words is "thirty-seven billion, four hundred ninety-three million, three hundred ninety-two thousand, nine hundred ninety-one".