18914900 has 18 divisors (see below), whose sum is σ = 41045550. Its totient is φ = 7565920.

The previous prime is 18914893. The next prime is 18914923. The reversal of 18914900 is 941981.

It can be written as a sum of positive squares in 3 ways, for example, as 835396 + 18079504 = 914^2 + 4252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94475 + ... + 94674.

Almost surely, 2^18914900 is an apocalyptic number.

18914900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18914900 is an abundant number, since it is smaller than the sum of its proper divisors (22130650).

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

18914900 is a wasteful number, since it uses less digits than its factorization.

18914900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189163 (or 189156 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 18914900 is about 4349.1263490499. The cubic root of 18914900 is about 266.4411809172.

The spelling of 18914900 in words is "eighteen million, nine hundred fourteen thousand, nine hundred".