37994996737 has 4 divisors (see below), whose sum is σ = 38129254960. Its totient is φ = 37860738516.

The previous prime is 37994996723. The next prime is 37994996747. The reversal of 37994996737 is 73769949973.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 37994996737 - 2¹¹ = 37994994689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37994996737.

It is not an unprimeable number, because it can be changed into a prime (37994996747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67128687 + ... + 67129252.

It is an arithmetic number, because the mean of its divisors is an integer number (9532313740).

Almost surely, 2^37994996737 is an apocalyptic number.

It is an amenable number.

37994996737 is a deficient number, since it is larger than the sum of its proper divisors (134258223).

37994996737 is a wasteful number, since it uses less digits than its factorization.

37994996737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134258222.

The product of its digits is 486091368, while the sum is 73.

The spelling of 37994996737 in words is "thirty-seven billion, nine hundred ninety-four million, nine hundred ninety-six thousand, seven hundred thirty-seven".