18089648 has 20 divisors (see below), whose sum is σ = 35127960. Its totient is φ = 9024384.

The previous prime is 18089623. The next prime is 18089677. The reversal of 18089648 is 84698081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18089599 and 18089608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8111 + ... + 10097.

It is an arithmetic number, because the mean of its divisors is an integer number (1756398).

Almost surely, 2^18089648 is an apocalyptic number.

It is an amenable number.

18089648 is a deficient number, since it is larger than the sum of its proper divisors (17038312).

18089648 is a wasteful number, since it uses less digits than its factorization.

18089648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564 (or 2558 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 18089648 is about 4253.1926831499. The cubic root of 18089648 is about 262.5085010097.

The spelling of 18089648 in words is "eighteen million, eighty-nine thousand, six hundred forty-eight".