18314743 has 4 divisors (see below), whose sum is σ = 18417240. Its totient is φ = 18212248.

The previous prime is 18314731. The next prime is 18314749. The reversal of 18314743 is 34741381.

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

It is a cyclic number.

It is not a de Polignac number, because 18314743 - 2⁵ = 18314711 is a prime.

It is a super-2 number, since 2×18314743² = 670859622312098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18314749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50980 + ... + 51337.

It is an arithmetic number, because the mean of its divisors is an integer number (4604310).

Almost surely, 2^18314743 is an apocalyptic number.

18314743 is a deficient number, since it is larger than the sum of its proper divisors (102497).

18314743 is a wasteful number, since it uses less digits than its factorization.

18314743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102496.

The product of its digits is 8064, while the sum is 31.

The square root of 18314743 is about 4279.5727590497. The cubic root of 18314743 is about 263.5928401938.

The spelling of 18314743 in words is "eighteen million, three hundred fourteen thousand, seven hundred forty-three".