18153140 has 12 divisors (see below), whose sum is σ = 38121636. Its totient is φ = 7261248.

The previous prime is 18153137. The next prime is 18153143. The reversal of 18153140 is 4135181.

It is an interprime number because it is at equal distance from previous prime (18153137) and next prime (18153143).

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 4990756 = 3628^2 + 2234^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18153143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453809 + ... + 453848.

It is an arithmetic number, because the mean of its divisors is an integer number (3176803).

Almost surely, 2^18153140 is an apocalyptic number.

18153140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18153140 is an abundant number, since it is smaller than the sum of its proper divisors (19968496).

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

18153140 is a wasteful number, since it uses less digits than its factorization.

18153140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907666 (or 907664 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 18153140 is about 4260.6501851243. The cubic root of 18153140 is about 262.8152644485.

The spelling of 18153140 in words is "eighteen million, one hundred fifty-three thousand, one hundred forty".