18249343 has 16 divisors (see below), whose sum is σ = 21482496. Its totient is φ = 15180480.

The previous prime is 18249337. The next prime is 18249353. The reversal of 18249343 is 34394281.

It is a de Polignac number, because none of the positive numbers 2^k-18249343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18249299 and 18249308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36030 + ... + 36532.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^18249343 is an apocalyptic number.

18249343 is a deficient number, since it is larger than the sum of its proper divisors (3233153).

18249343 is an equidigital number, since it uses as much as digits as its factorization.

18249343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its digits is 20736, while the sum is 34.

The square root of 18249343 is about 4271.9249759330. The cubic root of 18249343 is about 263.2787119882.

The spelling of 18249343 in words is "eighteen million, two hundred forty-nine thousand, three hundred forty-three".