18044121 has 8 divisors (see below), whose sum is σ = 25104960. Its totient is φ = 11506352.

The previous prime is 18044113. The next prime is 18044161. The reversal of 18044121 is 12144081.

It is a happy number.

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 18044121 - 2³ = 18044113 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (18044111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130686 + ... + 130823.

It is an arithmetic number, because the mean of its divisors is an integer number (3138120).

Almost surely, 2^18044121 is an apocalyptic number.

It is an amenable number.

18044121 is a deficient number, since it is larger than the sum of its proper divisors (7060839).

18044121 is a wasteful number, since it uses less digits than its factorization.

18044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261535.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 18044121 is about 4247.8372143951. The cubic root of 18044121 is about 262.2880938349.

The spelling of 18044121 in words is "eighteen million, forty-four thousand, one hundred twenty-one".