18875642 has 8 divisors (see below), whose sum is σ = 28736256. Its totient is φ = 9296892.

The previous prime is 18875641. The next prime is 18875651. The reversal of 18875642 is 24657881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18875642.

It is not an unprimeable number, because it can be changed into a prime (18875641) 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, 70298 + ... + 70565.

It is an arithmetic number, because the mean of its divisors is an integer number (3592032).

Almost surely, 2^18875642 is an apocalyptic number.

18875642 is a deficient number, since it is larger than the sum of its proper divisors (9860614).

18875642 is a wasteful number, since it uses less digits than its factorization.

18875642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140932.

The product of its digits is 107520, while the sum is 41.

The square root of 18875642 is about 4344.6106845148. The cubic root of 18875642 is about 266.2567197640.

The spelling of 18875642 in words is "eighteen million, eight hundred seventy-five thousand, six hundred forty-two".