18354546 has 64 divisors (see below), whose sum is σ = 47462400. Its totient is φ = 5149008.

The previous prime is 18354521. The next prime is 18354563. The reversal of 18354546 is 64545381.

It is a happy number.

It is a super-2 number, since 2×18354546² = 673778717732232, which contains 22 as substring.

Its product of digits (57600) is a multiple of the sum of its prime factors (900).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18354546.

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, 21891 + ... + 22713.

It is an arithmetic number, because the mean of its divisors is an integer number (741600).

Almost surely, 2^18354546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18354546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23731200).

18354546 is an abundant number, since it is smaller than the sum of its proper divisors (29107854).

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

18354546 is a wasteful number, since it uses less digits than its factorization.

18354546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 894 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 18354546 is about 4284.2205825564. The cubic root of 18354546 is about 263.7836554014.

The spelling of 18354546 in words is "eighteen million, three hundred fifty-four thousand, five hundred forty-six".