18143875 has 16 divisors (see below), whose sum is σ = 23261472. Its totient is φ = 14119200.

The previous prime is 18143863. The next prime is 18143891. The reversal of 18143875 is 57834181.

It is not a de Polignac number, because 18143875 - 2¹³ = 18135683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2664 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (1453842).

Almost surely, 2^18143875 is an apocalyptic number.

18143875 is a deficient number, since it is larger than the sum of its proper divisors (5117597).

18143875 is an equidigital number, since it uses as much as digits as its factorization.

18143875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3965 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 18143875 is about 4259.5627709895. The cubic root of 18143875 is about 262.7705449529.

The spelling of 18143875 in words is "eighteen million, one hundred forty-three thousand, eight hundred seventy-five".