18074985 has 16 divisors (see below), whose sum is σ = 30442560. Its totient is φ = 9132480.

The previous prime is 18074983. The next prime is 18074989. The reversal of 18074985 is 58947081.

It is not a de Polignac number, because 18074985 - 2¹ = 18074983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18074983) 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 15 ways as a sum of consecutive naturals, for example, 31426 + ... + 31995.

It is an arithmetic number, because the mean of its divisors is an integer number (1902660).

Almost surely, 2^18074985 is an apocalyptic number.

18074985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18074985 is a deficient number, since it is larger than the sum of its proper divisors (12367575).

18074985 is a wasteful number, since it uses less digits than its factorization.

18074985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63448.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18074985 is about 4251.4685698003. The cubic root of 18074985 is about 262.4375543071.

The spelling of 18074985 in words is "eighteen million, seventy-four thousand, nine hundred eighty-five".