18745842 has 8 divisors (see below), whose sum is σ = 37491696. Its totient is φ = 6248612.

The previous prime is 18745841. The next prime is 18745843. The reversal of 18745842 is 24854781.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18745841) and next prime (18745843).

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

18745842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 18745842.

It is not an unprimeable number, because it can be changed into a prime (18745841) 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, 1562148 + ... + 1562159.

It is an arithmetic number, because the mean of its divisors is an integer number (4686462).

Almost surely, 2^18745842 is an apocalyptic number.

18745842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18745842 is a wasteful number, since it uses less digits than its factorization.

18745842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124312.

The product of its digits is 71680, while the sum is 39.

The square root of 18745842 is about 4329.6468678173. The cubic root of 18745842 is about 265.6450029135.

The spelling of 18745842 in words is "eighteen million, seven hundred forty-five thousand, eight hundred forty-two".