18037836872138 has 8 divisors (see below), whose sum is σ = 27060670356480. Its totient is φ = 9017613419980.

The previous prime is 18037836872123. The next prime is 18037836872177. The reversal of 18037836872138 is 83127863873081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18037836872138² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652490768 + ... + 652518411.

It is an arithmetic number, because the mean of its divisors is an integer number (3382583794560).

Almost surely, 2^{18037836872138} is an apocalyptic number.

18037836872138 is a deficient number, since it is larger than the sum of its proper divisors (9022833484342).

18037836872138 is a wasteful number, since it uses less digits than its factorization.

18037836872138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305016092.

The product of its (nonzero) digits is 65028096, while the sum is 65.

The spelling of 18037836872138 in words is "eighteen trillion, thirty-seven billion, eight hundred thirty-six million, eight hundred seventy-two thousand, one hundred thirty-eight".