18995000 has 80 divisors (see below), whose sum is σ = 46391400. Its totient is φ = 7280000.

The previous prime is 18994999. The next prime is 18995021. The reversal of 18995000 is 59981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 144935 + ... + 145065.

Almost surely, 2^18995000 is an apocalyptic number.

18995000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18995000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23195700).

18995000 is an abundant number, since it is smaller than the sum of its proper divisors (27396400).

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

18995000 is a wasteful number, since it uses less digits than its factorization.

18995000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 18995000 is about 4358.3253664682. The cubic root of 18995000 is about 266.8167557866.

The spelling of 18995000 in words is "eighteen million, nine hundred ninety-five thousand".