18742875 has 32 divisors (see below), whose sum is σ = 31489536. Its totient is φ = 9900000.

The previous prime is 18742849. The next prime is 18742901. The reversal of 18742875 is 57824781.

It is an interprime number because it is at equal distance from previous prime (18742849) and next prime (18742901).

It is not a de Polignac number, because 18742875 - 2⁹ = 18742363 is a prime.

Its product of digits (125440) is a multiple of the sum of its prime divisors (490).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56460 + ... + 56790.

It is an arithmetic number, because the mean of its divisors is an integer number (984048).

Almost surely, 2^18742875 is an apocalyptic number.

18742875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18742875 is a deficient number, since it is larger than the sum of its proper divisors (12746661).

18742875 is a wasteful number, since it uses less digits than its factorization.

18742875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 490 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 18742875 is about 4329.3042166150. The cubic root of 18742875 is about 265.6309871776.

The spelling of 18742875 in words is "eighteen million, seven hundred forty-two thousand, eight hundred seventy-five".