18343854 has 48 divisors (see below), whose sum is σ = 43068240. Its totient is φ = 5786640.

The previous prime is 18343849. The next prime is 18343861. The reversal of 18343854 is 45834381.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19024 + ... + 19964.

It is an arithmetic number, because the mean of its divisors is an integer number (897255).

Almost surely, 2^18343854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18343854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21534120).

18343854 is an abundant number, since it is smaller than the sum of its proper divisors (24724386).

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

18343854 is a wasteful number, since it uses less digits than its factorization.

18343854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 965 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 18343854 is about 4282.9725658706. The cubic root of 18343854 is about 263.7324251746.

The spelling of 18343854 in words is "eighteen million, three hundred forty-three thousand, eight hundred fifty-four".