18012055 has 8 divisors (see below), whose sum is σ = 22117392. Its totient is φ = 14074368.

The previous prime is 18012047. The next prime is 18012067. The reversal of 18012055 is 55021081.

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

It is a cyclic number.

It is not a de Polignac number, because 18012055 - 2³ = 18012047 is a prime.

It is a Duffinian number.

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, 41674 + ... + 42103.

It is an arithmetic number, because the mean of its divisors is an integer number (2764674).

Almost surely, 2^18012055 is an apocalyptic number.

18012055 is a deficient number, since it is larger than the sum of its proper divisors (4105337).

18012055 is an equidigital number, since it uses as much as digits as its factorization.

18012055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83825.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 18012055 is about 4244.0611447056. The cubic root of 18012055 is about 262.1326319899.

The spelling of 18012055 in words is "eighteen million, twelve thousand, fifty-five".