18443600743 has 2 divisors, whose sum is σ = 18443600744. Its totient is φ = 18443600742.

The previous prime is 18443600737. The next prime is 18443600767. The reversal of 18443600743 is 34700634481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18443600743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18443600696 and 18443600705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18443606743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9221800371 + 9221800372.

It is an arithmetic number, because the mean of its divisors is an integer number (9221800372).

Almost surely, 2^18443600743 is an apocalyptic number.

18443600743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18443600743 is an equidigital number, since it uses as much as digits as its factorization.

18443600743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 18443600743 in words is "eighteen billion, four hundred forty-three million, six hundred thousand, seven hundred forty-three".