18459234 has 12 divisors (see below), whose sum is σ = 39995046. Its totient is φ = 6153072.

The previous prime is 18459209. The next prime is 18459239. The reversal of 18459234 is 43295481.

It can be written as a sum of positive squares in only one way, i.e., 9903609 + 8555625 = 3147^2 + 2925^2 .

It is not an unprimeable number, because it can be changed into a prime (18459239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512739 + ... + 512774.

Almost surely, 2^18459234 is an apocalyptic number.

18459234 is an abundant number, since it is smaller than the sum of its proper divisors (21535812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18459234 is a wasteful number, since it uses less digits than its factorization.

18459234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025521 (or 1025518 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 18459234 is about 4296.4210687501. The cubic root of 18459234 is about 264.2842152616.

The spelling of 18459234 in words is "eighteen million, four hundred fifty-nine thousand, two hundred thirty-four".