18545875458 has 24 divisors (see below), whose sum is σ = 40770273264. Its totient is φ = 5619962040.

The previous prime is 18545875441. The next prime is 18545875493. The reversal of 18545875458 is 85457854581.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12771916 + ... + 12773367.

It is an arithmetic number, because the mean of its divisors is an integer number (1698761386).

Almost surely, 2^18545875458 is an apocalyptic number.

18545875458 is an abundant number, since it is smaller than the sum of its proper divisors (22224397806).

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

18545875458 is a wasteful number, since it uses less digits than its factorization.

18545875458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25545310 (or 25545299 counting only the distinct ones).

The product of its digits is 35840000, while the sum is 60.

The spelling of 18545875458 in words is "eighteen billion, five hundred forty-five million, eight hundred seventy-five thousand, four hundred fifty-eight".