18406854 has 48 divisors (see below), whose sum is σ = 42018912. Its totient is φ = 5812224.

The previous prime is 18406853. The next prime is 18406859. The reversal of 18406854 is 45860481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18406853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71494 + ... + 71750.

It is an arithmetic number, because the mean of its divisors is an integer number (875394).

Almost surely, 2^18406854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18406854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21009456).

18406854 is an abundant number, since it is smaller than the sum of its proper divisors (23612058).

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

18406854 is a wasteful number, since it uses less digits than its factorization.

18406854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 18406854 is about 4290.3209670140. The cubic root of 18406854 is about 264.0340004418.

The spelling of 18406854 in words is "eighteen million, four hundred six thousand, eight hundred fifty-four".