18462618 has 48 divisors (see below), whose sum is σ = 41881320. Its totient is φ = 5870592.

The previous prime is 18462617. The next prime is 18462641. The reversal of 18462618 is 81626481.

18462618 is a `hidden beast` number, since 18 + 4 + 626 + 18 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4422609 + 14040009 = 2103^2 + 3747^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18462611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58830 + ... + 59142.

Almost surely, 2^18462618 is an apocalyptic number.

18462618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18462618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20940660).

18462618 is an abundant number, since it is smaller than the sum of its proper divisors (23418702).

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

18462618 is a wasteful number, since it uses less digits than its factorization.

18462618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 460 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 18462618 is about 4296.8148668520. The cubic root of 18462618 is about 264.3003640563.

The spelling of 18462618 in words is "eighteen million, four hundred sixty-two thousand, six hundred eighteen".