18810742 has 8 divisors (see below), whose sum is σ = 28359936. Its totient is φ = 9357432.

The previous prime is 18810739. The next prime is 18810749. The reversal of 18810742 is 24701881.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18810749) 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, 23478 + ... + 24265.

It is an arithmetic number, because the mean of its divisors is an integer number (3544992).

Almost surely, 2^18810742 is an apocalyptic number.

18810742 is a deficient number, since it is larger than the sum of its proper divisors (9549194).

18810742 is a wasteful number, since it uses less digits than its factorization.

18810742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47942.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 18810742 is about 4337.1352296187. The cubic root of 18810742 is about 265.9512130926.

The spelling of 18810742 in words is "eighteen million, eight hundred ten thousand, seven hundred forty-two".