18275121 has 12 divisors (see below), whose sum is σ = 26792272. Its totient is φ = 12001176.

The previous prime is 18275113. The next prime is 18275167. The reversal of 18275121 is 12157281.

It is not a de Polignac number, because 18275121 - 2³ = 18275113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18275021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14551 + ... + 15756.

Almost surely, 2^18275121 is an apocalyptic number.

It is an amenable number.

18275121 is a deficient number, since it is larger than the sum of its proper divisors (8517151).

18275121 is a wasteful number, since it uses less digits than its factorization.

18275121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30380 (or 30377 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 18275121 is about 4274.9410522252. The cubic root of 18275121 is about 263.4026179208.

The spelling of 18275121 in words is "eighteen million, two hundred seventy-five thousand, one hundred twenty-one".