18053660 has 48 divisors (see below), whose sum is σ = 41549760. Its totient is φ = 6558720.

The previous prime is 18053657. The next prime is 18053663. The reversal of 18053660 is 6635081.

It is an interprime number because it is at equal distance from previous prime (18053657) and next prime (18053663).

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8945 + ... + 10775.

It is an arithmetic number, because the mean of its divisors is an integer number (865620).

Almost surely, 2^18053660 is an apocalyptic number.

18053660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18053660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20774880).

18053660 is an abundant number, since it is smaller than the sum of its proper divisors (23496100).

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

18053660 is a wasteful number, since it uses less digits than its factorization.

18053660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 18053660 is about 4248.9598727218. The cubic root of 18053660 is about 262.3343051073.

The spelling of 18053660 in words is "eighteen million, fifty-three thousand, six hundred sixty".