18800630 has 16 divisors (see below), whose sum is σ = 33944400. Its totient is φ = 7497312.

The previous prime is 18800629. The next prime is 18800641. The reversal of 18800630 is 3600881.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18800630.

It is a congruent number.

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, 797 + ... + 6183.

It is an arithmetic number, because the mean of its divisors is an integer number (2121525).

Almost surely, 2^18800630 is an apocalyptic number.

18800630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18800630 is a deficient number, since it is larger than the sum of its proper divisors (15143770).

18800630 is a wasteful number, since it uses less digits than its factorization.

18800630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18800630 is about 4335.9693264598. The cubic root of 18800630 is about 265.9035491798.

The spelling of 18800630 in words is "eighteen million, eight hundred thousand, six hundred thirty".