18845868 has 24 divisors (see below), whose sum is σ = 44997568. Its totient is φ = 6135696.

The previous prime is 18845851. The next prime is 18845909. The reversal of 18845868 is 86854881.

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, 17746 + ... + 18777.

Almost surely, 2^18845868 is an apocalyptic number.

It is an amenable number.

18845868 is an abundant number, since it is smaller than the sum of its proper divisors (26151700).

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

18845868 is a wasteful number, since it uses less digits than its factorization.

18845868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36573 (or 36571 counting only the distinct ones).

The product of its digits is 491520, while the sum is 48.

The square root of 18845868 is about 4341.1827881350. The cubic root of 18845868 is about 266.1166503655.

It can be divided in two parts, 188 and 45868, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 18845868 in words is "eighteen million, eight hundred forty-five thousand, eight hundred sixty-eight".