18455364 has 42 divisors (see below), whose sum is σ = 48430830. Its totient is φ = 6150816.

The previous prime is 18455363. The next prime is 18455369. The reversal of 18455364 is 46355481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17288964 + 1166400 = 4158^2 + 1080^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18455363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 249 + ... + 6080.

It is an arithmetic number, because the mean of its divisors is an integer number (1153115).

Almost surely, 2^18455364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18455364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24215415).

18455364 is an abundant number, since it is smaller than the sum of its proper divisors (29975466).

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

18455364 is an equidigital number, since it uses as much as digits as its factorization.

18455364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351 (or 6334 counting only the distinct ones).

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

The square root of 18455364 is about 4295.9706702909. The cubic root of 18455364 is about 264.2657448058.

The spelling of 18455364 in words is "eighteen million, four hundred fifty-five thousand, three hundred sixty-four".