18814830 has 32 divisors (see below), whose sum is σ = 46614528. Its totient is φ = 4855200.

The previous prime is 18814819. The next prime is 18814847. The reversal of 18814830 is 3841881.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18814791 and 18814800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9186 + ... + 11045.

It is an arithmetic number, because the mean of its divisors is an integer number (1456704).

Almost surely, 2^18814830 is an apocalyptic number.

18814830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18814830 is an abundant number, since it is smaller than the sum of its proper divisors (27799698).

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

18814830 is a wasteful number, since it uses less digits than its factorization.

18814830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20272.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18814830 is about 4337.6064828428. The cubic root of 18814830 is about 265.9704774366.

The spelling of 18814830 in words is "eighteen million, eight hundred fourteen thousand, eight hundred thirty".