18420054 has 8 divisors (see below), whose sum is σ = 36840120. Its totient is φ = 6140016.

The previous prime is 18420053. The next prime is 18420067. The reversal of 18420054 is 45002481.

It is a sphenic number, since it is the product of 3 distinct primes.

18420054 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18420053) 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, 1534999 + ... + 1535010.

It is an arithmetic number, because the mean of its divisors is an integer number (4605015).

Almost surely, 2^18420054 is an apocalyptic number.

18420054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18420054 is a wasteful number, since it uses less digits than its factorization.

18420054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070014.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 18420054 is about 4291.8590377597. The cubic root of 18420054 is about 264.0971004157.

The spelling of 18420054 in words is "eighteen million, four hundred twenty thousand, fifty-four".