18249043 has 2 divisors, whose sum is σ = 18249044. Its totient is φ = 18249042.

The previous prime is 18249031. The next prime is 18249053. The reversal of 18249043 is 34094281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18249043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18248996 and 18249014.

It is not a weakly prime, because it can be changed into another prime (18249053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124521 + 9124522.

It is an arithmetic number, because the mean of its divisors is an integer number (9124522).

Almost surely, 2^18249043 is an apocalyptic number.

18249043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18249043 is an equidigital number, since it uses as much as digits as its factorization.

18249043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18249043 is about 4271.8898628125. The cubic root of 18249043 is about 263.2772693053.

The spelling of 18249043 in words is "eighteen million, two hundred forty-nine thousand, forty-three".