18459016 has 8 divisors (see below), whose sum is σ = 34610670. Its totient is φ = 9229504.

The previous prime is 18458987. The next prime is 18459019. The reversal of 18459016 is 61095481.

It can be written as a sum of positive squares in only one way, i.e., 9278116 + 9180900 = 3046^2 + 3030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18459019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1153681 + ... + 1153696.

Almost surely, 2^18459016 is an apocalyptic number.

It is an amenable number.

18459016 is a deficient number, since it is larger than the sum of its proper divisors (16151654).

18459016 is a wasteful number, since it uses less digits than its factorization.

18459016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307383 (or 2307379 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 18459016 is about 4296.3956987224. The cubic root of 18459016 is about 264.2831748756.

The spelling of 18459016 in words is "eighteen million, four hundred fifty-nine thousand, sixteen".