18930084 has 12 divisors (see below), whose sum is σ = 44170224. Its totient is φ = 6310024.

The previous prime is 18930083. The next prime is 18930089. The reversal of 18930084 is 48003981.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18930083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788742 + ... + 788765.

It is an arithmetic number, because the mean of its divisors is an integer number (3680852).

Almost surely, 2^18930084 is an apocalyptic number.

It is an amenable number.

18930084 is an abundant number, since it is smaller than the sum of its proper divisors (25240140).

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

18930084 is a wasteful number, since it uses less digits than its factorization.

18930084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577514 (or 1577512 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18930084 is about 4350.8716368103. The cubic root of 18930084 is about 266.5124573681.

The spelling of 18930084 in words is "eighteen million, nine hundred thirty thousand, eighty-four".