37881631316 has 6 divisors (see below), whose sum is σ = 66292854810. Its totient is φ = 18940815656.

The previous prime is 37881631309. The next prime is 37881631363. The reversal of 37881631316 is 61313618873.

37881631316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19765548100 + 18116083216 = 140590^2 + 134596^2 .

It is a super-2 number, since 2×37881631316² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4735203911 + ... + 4735203918.

It is an arithmetic number, because the mean of its divisors is an integer number (11048809135).

Almost surely, 2^37881631316 is an apocalyptic number.

It is an amenable number.

37881631316 is a deficient number, since it is larger than the sum of its proper divisors (28411223494).

37881631316 is a wasteful number, since it uses less digits than its factorization.

37881631316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470407833 (or 9470407831 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The spelling of 37881631316 in words is "thirty-seven billion, eight hundred eighty-one million, six hundred thirty-one thousand, three hundred sixteen".