18444501185 has 16 divisors (see below), whose sum is σ = 24148495872. Its totient is φ = 13412534400.

The previous prime is 18444501139. The next prime is 18444501191. The reversal of 18444501185 is 58110544481.

It is not a de Polignac number, because 18444501185 - 2¹⁸ = 18444239041 is a prime.

It is a Duffinian number.

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, 598832 + ... + 628878.

It is an arithmetic number, because the mean of its divisors is an integer number (1509280992).

Almost surely, 2^18444501185 is an apocalyptic number.

It is an amenable number.

18444501185 is a deficient number, since it is larger than the sum of its proper divisors (5703994687).

18444501185 is a wasteful number, since it uses less digits than its factorization.

18444501185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41224.

The product of its (nonzero) digits is 102400, while the sum is 41.

The spelling of 18444501185 in words is "eighteen billion, four hundred forty-four million, five hundred one thousand, one hundred eighty-five".