18301140 has 240 divisors, whose sum is σ = 68302080. Its totient is φ = 4043520.

The previous prime is 18301133. The next prime is 18301147. The reversal of 18301140 is 4110381.

It is an interprime number because it is at equal distance from previous prime (18301133) and next prime (18301147).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18301147) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 231621 + ... + 231699.

It is an arithmetic number, because the mean of its divisors is an integer number (284592).

Almost surely, 2^18301140 is an apocalyptic number.

18301140 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 18301140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34151040).

18301140 is an abundant number, since it is smaller than the sum of its proper divisors (50000940).

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

18301140 is a wasteful number, since it uses less digits than its factorization.

18301140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 18301140 is about 4277.9831696724. The cubic root of 18301140 is about 263.5275641572.

The spelling of 18301140 in words is "eighteen million, three hundred one thousand, one hundred forty".