18340743 has 8 divisors (see below), whose sum is σ = 24481008. Its totient is φ = 12213824.

The previous prime is 18340741. The next prime is 18340769. The reversal of 18340743 is 34704381.

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

It is a cyclic number.

It is not a de Polignac number, because 18340743 - 2¹ = 18340741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18340743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (3060126).

Almost surely, 2^18340743 is an apocalyptic number.

18340743 is a deficient number, since it is larger than the sum of its proper divisors (6140265).

18340743 is a wasteful number, since it uses less digits than its factorization.

18340743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 18340743 is about 4282.6093681306. The cubic root of 18340743 is about 263.7175152223.

The spelling of 18340743 in words is "eighteen million, three hundred forty thousand, seven hundred forty-three".