37986130781 has 2 divisors, whose sum is σ = 37986130782. Its totient is φ = 37986130780.

The previous prime is 37986130751. The next prime is 37986130783. The reversal of 37986130781 is 18703168973.

37986130781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37882783225 + 103347556 = 194635^2 + 10166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37986130781 is a prime.

It is a super-2 number, since 2×37986130781² (a number of 22 digits) contains 22 as substring.

Together with 37986130783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37986130783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18993065390 + 18993065391.

It is an arithmetic number, because the mean of its divisors is an integer number (18993065391).

Almost surely, 2^37986130781 is an apocalyptic number.

It is an amenable number.

37986130781 is a deficient number, since it is larger than the sum of its proper divisors (1).

37986130781 is an equidigital number, since it uses as much as digits as its factorization.

37986130781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 37986130781 in words is "thirty-seven billion, nine hundred eighty-six million, one hundred thirty thousand, seven hundred eighty-one".