18075644 has 12 divisors (see below), whose sum is σ = 31662624. Its totient is φ = 9029184.

The previous prime is 18075623. The next prime is 18075649. The reversal of 18075644 is 44657081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5837 + ... + 8379.

It is an arithmetic number, because the mean of its divisors is an integer number (2638552).

Almost surely, 2^18075644 is an apocalyptic number.

It is an amenable number.

18075644 is a deficient number, since it is larger than the sum of its proper divisors (13586980).

18075644 is a wasteful number, since it uses less digits than its factorization.

18075644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 18075644 is about 4251.5460717250. The cubic root of 18075644 is about 262.4407436919.

The spelling of 18075644 in words is "eighteen million, seventy-five thousand, six hundred forty-four".