18141140 has 24 divisors (see below), whose sum is σ = 38355072. Its totient is φ = 7207200.

The previous prime is 18141127. The next prime is 18141161. The reversal of 18141140 is 4114181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17 + ... + 6023.

It is an arithmetic number, because the mean of its divisors is an integer number (1598128).

Almost surely, 2^18141140 is an apocalyptic number.

18141140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18141140 is an abundant number, since it is smaller than the sum of its proper divisors (20213932).

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

18141140 is a wasteful number, since it uses less digits than its factorization.

18141140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167 (or 6165 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 18141140 is about 4259.2417165500. The cubic root of 18141140 is about 262.7573409827.

It can be divided in two parts, 18141 and 140, that added together give a palindrome (18281).

The spelling of 18141140 in words is "eighteen million, one hundred forty-one thousand, one hundred forty".