18518501850185 has 32 divisors (see below), whose sum is σ = 24431189155200. Its totient is φ = 13424295214080.

The previous prime is 18518501850127. The next prime is 18518501850227. The reversal of 18518501850185 is 58105810581581.

It is not a de Polignac number, because 18518501850185 - 2¹⁴ = 18518501833801 is a prime.

18518501850185 is a modest number, since divided by 1850185 gives 185185 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 18518501850185.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44440256 + ... + 44855025.

It is an arithmetic number, because the mean of its divisors is an integer number (763474661100).

Almost surely, 2^{18518501850185} is an apocalyptic number.

It is an amenable number.

18518501850185 is a deficient number, since it is larger than the sum of its proper divisors (5912687305015).

18518501850185 is a wasteful number, since it uses less digits than its factorization.

18518501850185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89295401.

The product of its (nonzero) digits is 2560000, while the sum is 56.

The spelling of 18518501850185 in words is "eighteen trillion, five hundred eighteen billion, five hundred one million, eight hundred fifty thousand, one hundred eighty-five".