37390091957 has 2 divisors, whose sum is σ = 37390091958. Its totient is φ = 37390091956.

The previous prime is 37390091951. The next prime is 37390091987. The reversal of 37390091957 is 75919009373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20175077521 + 17215014436 = 142039^2 + 131206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37390091957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37390091899 and 37390091908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37390091951) 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, 18695045978 + 18695045979.

It is an arithmetic number, because the mean of its divisors is an integer number (18695045979).

Almost surely, 2^37390091957 is an apocalyptic number.

It is an amenable number.

37390091957 is a deficient number, since it is larger than the sum of its proper divisors (1).

37390091957 is an equidigital number, since it uses as much as digits as its factorization.

37390091957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1607445, while the sum is 53.

The spelling of 37390091957 in words is "thirty-seven billion, three hundred ninety million, ninety-one thousand, nine hundred fifty-seven".