18012445 has 8 divisors (see below), whose sum is σ = 23580000. Its totient is φ = 13099920.

The previous prime is 18012439. The next prime is 18012499. The reversal of 18012445 is 54421081.

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

It is not a de Polignac number, because 18012445 - 2⁵ = 18012413 is a prime.

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, 163695 + ... + 163804.

It is an arithmetic number, because the mean of its divisors is an integer number (2947500).

Almost surely, 2^18012445 is an apocalyptic number.

It is an amenable number.

18012445 is a deficient number, since it is larger than the sum of its proper divisors (5567555).

18012445 is a wasteful number, since it uses less digits than its factorization.

18012445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327515.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 18012445 is about 4244.1070910146. The cubic root of 18012445 is about 262.1345238893.

The spelling of 18012445 in words is "eighteen million, twelve thousand, four hundred forty-five".