18473743 has 2 divisors, whose sum is σ = 18473744. Its totient is φ = 18473742.

The previous prime is 18473717. The next prime is 18473753. The reversal of 18473743 is 34737481.

It is a strong prime.

It is an emirp because it is prime and its reverse (34737481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18473743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18473753) 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, 9236871 + 9236872.

It is an arithmetic number, because the mean of its divisors is an integer number (9236872).

Almost surely, 2^18473743 is an apocalyptic number.

18473743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473743 is an equidigital number, since it uses as much as digits as its factorization.

18473743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 18473743 is about 4298.1092354662. The cubic root of 18473743 is about 264.3534397931.

The spelling of 18473743 in words is "eighteen million, four hundred seventy-three thousand, seven hundred forty-three".