18860457444 has 24 divisors (see below), whose sum is σ = 44010159648. Its totient is φ = 6286472640.

The previous prime is 18860457433. The next prime is 18860457479. The reversal of 18860457444 is 44475406881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280024 + ... + 340784.

It is an arithmetic number, because the mean of its divisors is an integer number (1833756652).

Almost surely, 2^18860457444 is an apocalyptic number.

It is an amenable number.

18860457444 is an abundant number, since it is smaller than the sum of its proper divisors (25149702204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18860457444 is a wasteful number, since it uses less digits than its factorization.

18860457444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86635 (or 86633 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 51.

The spelling of 18860457444 in words is "eighteen billion, eight hundred sixty million, four hundred fifty-seven thousand, four hundred forty-four".