18036387875 has 16 divisors (see below), whose sum is σ = 24555724128. Its totient is φ = 13117372000.

The previous prime is 18036387839. The next prime is 18036387899. The reversal of 18036387875 is 57878363081.

It is a de Polignac number, because none of the positive numbers 2^k-18036387875 is a prime.

It is a super-2 number, since 2×18036387875² (a number of 21 digits) contains 22 as substring.

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 18036387875.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6557312 + ... + 6560061.

It is an arithmetic number, because the mean of its divisors is an integer number (1534732758).

Almost surely, 2^18036387875 is an apocalyptic number.

18036387875 is a deficient number, since it is larger than the sum of its proper divisors (6519336253).

18036387875 is a wasteful number, since it uses less digits than its factorization.

18036387875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13117399 (or 13117389 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 18036387875 in words is "eighteen billion, thirty-six million, three hundred eighty-seven thousand, eight hundred seventy-five".