18995562 has 48 divisors (see below), whose sum is σ = 45489600. Its totient is φ = 5698176.

The previous prime is 18995533. The next prime is 18995597. The reversal of 18995562 is 26559981.

18995562 is a `hidden beast` number, since 1 + 8 + 99 + 556 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5689 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (947700).

Almost surely, 2^18995562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18995562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22744800).

18995562 is an abundant number, since it is smaller than the sum of its proper divisors (26494038).

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

18995562 is a wasteful number, since it uses less digits than its factorization.

18995562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2744 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 18995562 is about 4358.3898402965. The cubic root of 18995562 is about 266.8193871728.

The spelling of 18995562 in words is "eighteen million, nine hundred ninety-five thousand, five hundred sixty-two".