18456834 has 16 divisors (see below), whose sum is σ = 40269600. Its totient is φ = 5592960.

The previous prime is 18456799. The next prime is 18456857. The reversal of 18456834 is 43865481.

It is a junction number, because it is equal to n+sod(n) for n = 18456792 and 18456801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139759 + ... + 139890.

It is an arithmetic number, because the mean of its divisors is an integer number (2516850).

Almost surely, 2^18456834 is an apocalyptic number.

18456834 is an abundant number, since it is smaller than the sum of its proper divisors (21812766).

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

18456834 is a wasteful number, since it uses less digits than its factorization.

18456834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279665.

The product of its digits is 92160, while the sum is 39.

The square root of 18456834 is about 4296.1417574377. The cubic root of 18456834 is about 264.2727610195.

The spelling of 18456834 in words is "eighteen million, four hundred fifty-six thousand, eight hundred thirty-four".