18814093 has 4 divisors (see below), whose sum is σ = 19322620. Its totient is φ = 18305568.

The previous prime is 18814079. The next prime is 18814141. The reversal of 18814093 is 39041881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17330569 + 1483524 = 4163^2 + 1218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18814093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18814013) 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, 254208 + ... + 254281.

It is an arithmetic number, because the mean of its divisors is an integer number (4830655).

Almost surely, 2^18814093 is an apocalyptic number.

It is an amenable number.

18814093 is a deficient number, since it is larger than the sum of its proper divisors (508527).

18814093 is an equidigital number, since it uses as much as digits as its factorization.

18814093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508526.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18814093 is about 4337.5215273241. The cubic root of 18814093 is about 265.9670045945.

The spelling of 18814093 in words is "eighteen million, eight hundred fourteen thousand, ninety-three".