18851064 has 16 divisors (see below), whose sum is σ = 47127720. Its totient is φ = 6283680.

The previous prime is 18851057. The next prime is 18851083. The reversal of 18851064 is 46015881.

It is a super-2 number, since 2×18851064² = 710725227864192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392707 + ... + 392754.

Almost surely, 2^18851064 is an apocalyptic number.

It is an amenable number.

18851064 is an abundant number, since it is smaller than the sum of its proper divisors (28276656).

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

18851064 is a wasteful number, since it uses less digits than its factorization.

18851064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785470 (or 785466 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18851064 is about 4341.7812013044. The cubic root of 18851064 is about 266.1411051524.

The spelling of 18851064 in words is "eighteen million, eight hundred fifty-one thousand, sixty-four".