18012045 has 32 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 9067520.

The previous prime is 18012041. The next prime is 18012047. The reversal of 18012045 is 54021081.

It is not a de Polignac number, because 18012045 - 2² = 18012041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18012041) 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 31 ways as a sum of consecutive naturals, for example, 20005 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^18012045 is an apocalyptic number.

18012045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18012045 is a deficient number, since it is larger than the sum of its proper divisors (12469875).

18012045 is a wasteful number, since it uses less digits than its factorization.

18012045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 18012045 is about 4244.0599665886. The cubic root of 18012045 is about 262.1325834793.

The spelling of 18012045 in words is "eighteen million, twelve thousand, forty-five".