18012485 has 16 divisors (see below), whose sum is σ = 22281600. Its totient is φ = 13970880.

The previous prime is 18012439. The next prime is 18012499. The reversal of 18012485 is 58421081.

It is not a de Polignac number, because 18012485 - 2¹⁴ = 17996101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42575 + ... + 42995.

It is an arithmetic number, because the mean of its divisors is an integer number (1392600).

Almost surely, 2^18012485 is an apocalyptic number.

It is an amenable number.

18012485 is a deficient number, since it is larger than the sum of its proper divisors (4269115).

18012485 is a wasteful number, since it uses less digits than its factorization.

18012485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 18012485 is about 4244.1118034284. Note that the first 3 decimals coincide. The cubic root of 18012485 is about 262.1347179288.

The spelling of 18012485 in words is "eighteen million, twelve thousand, four hundred eighty-five".