18205914 has 16 divisors (see below), whose sum is σ = 38328480. Its totient is φ = 5749200.

The previous prime is 18205909. The next prime is 18205937. The reversal of 18205914 is 41950281.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79737 + ... + 79964.

It is an arithmetic number, because the mean of its divisors is an integer number (2395530).

Almost surely, 2^18205914 is an apocalyptic number.

18205914 is an abundant number, since it is smaller than the sum of its proper divisors (20122566).

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

18205914 is a wasteful number, since it uses less digits than its factorization.

18205914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159725.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18205914 is about 4266.8388767330. The cubic root of 18205914 is about 263.0696996567.

The spelling of 18205914 in words is "eighteen million, two hundred five thousand, nine hundred fourteen".