37918893137 has 4 divisors (see below), whose sum is σ = 37923984240. Its totient is φ = 37913802036.

The previous prime is 37918893119. The next prime is 37918893151. The reversal of 37918893137 is 73139881973.

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 a de Polignac number, because none of the positive numbers 2^k-37918893137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37918893197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534363 + ... + 2549280.

It is an arithmetic number, because the mean of its divisors is an integer number (9480996060).

Almost surely, 2^37918893137 is an apocalyptic number.

It is an amenable number.

37918893137 is a deficient number, since it is larger than the sum of its proper divisors (5091103).

37918893137 is an equidigital number, since it uses as much as digits as its factorization.

37918893137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091102.

The product of its digits is 6858432, while the sum is 59.

The spelling of 37918893137 in words is "thirty-seven billion, nine hundred eighteen million, eight hundred ninety-three thousand, one hundred thirty-seven".