18797000 has 32 divisors (see below), whose sum is σ = 43987320. Its totient is φ = 7518400.

The previous prime is 18796993. The next prime is 18797021. The reversal of 18797000 is 79781.

It can be written as a sum of positive squares in 4 ways, for example, as 8773444 + 10023556 = 2962^2 + 3166^2 .

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, 8399 + ... + 10398.

Almost surely, 2^18797000 is an apocalyptic number.

18797000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18797000 is an abundant number, since it is smaller than the sum of its proper divisors (25190320).

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

18797000 is a wasteful number, since it uses less digits than its factorization.

18797000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18818 (or 18804 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 18797000 is about 4335.5507147305. The cubic root of 18797000 is about 265.8864346467.

The spelling of 18797000 in words is "eighteen million, seven hundred ninety-seven thousand".