18468534 has 64 divisors (see below), whose sum is σ = 44582400. Its totient is φ = 4988928.

The previous prime is 18468503. The next prime is 18468547. The reversal of 18468534 is 43586481.

It is a junction number, because it is equal to n+sod(n) for n = 18468492 and 18468501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71734 + ... + 71990.

It is an arithmetic number, because the mean of its divisors is an integer number (696600).

Almost surely, 2^18468534 is an apocalyptic number.

18468534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18468534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22291200).

18468534 is an abundant number, since it is smaller than the sum of its proper divisors (26113866).

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

18468534 is a wasteful number, since it uses less digits than its factorization.

18468534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

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

The square root of 18468534 is about 4297.5032286201. The cubic root of 18468534 is about 264.3285910747.

The spelling of 18468534 in words is "eighteen million, four hundred sixty-eight thousand, five hundred thirty-four".