18145860 has 48 divisors (see below), whose sum is σ = 51104256. Its totient is φ = 4810752.

The previous prime is 18145843. The next prime is 18145877. The reversal of 18145860 is 6854181.

It is an interprime number because it is at equal distance from previous prime (18145843) and next prime (18145877).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10797 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (1064672).

Almost surely, 2^18145860 is an apocalyptic number.

18145860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18145860 is an abundant number, since it is smaller than the sum of its proper divisors (32958396).

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

18145860 is a wasteful number, since it uses less digits than its factorization.

18145860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18145860 is about 4259.7957697523. The cubic root of 18145860 is about 262.7801272593.

The spelling of 18145860 in words is "eighteen million, one hundred forty-five thousand, eight hundred sixty".