18010889 has 8 divisors (see below), whose sum is σ = 19586112. Its totient is φ = 16462800.

The previous prime is 18010877. The next prime is 18010891. The reversal of 18010889 is 98801081.

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

It is a cyclic number.

It is not a de Polignac number, because 18010889 - 2²⁰ = 16962313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18010819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5387 + ... + 8064.

It is an arithmetic number, because the mean of its divisors is an integer number (2448264).

Almost surely, 2^18010889 is an apocalyptic number.

It is an amenable number.

18010889 is a deficient number, since it is larger than the sum of its proper divisors (1575223).

18010889 is a wasteful number, since it uses less digits than its factorization.

18010889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 18010889 is about 4243.9237740563. The cubic root of 18010889 is about 262.1269755329.

The spelling of 18010889 in words is "eighteen million, ten thousand, eight hundred eighty-nine".