18734743 has 2 divisors, whose sum is σ = 18734744. Its totient is φ = 18734742.

The previous prime is 18734707. The next prime is 18734759. The reversal of 18734743 is 34743781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18734743 - 2⁹ = 18734231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18734143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367371 + 9367372.

It is an arithmetic number, because the mean of its divisors is an integer number (9367372).

Almost surely, 2^18734743 is an apocalyptic number.

18734743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18734743 is an equidigital number, since it uses as much as digits as its factorization.

18734743 is an evil number, because the sum of its binary digits is even.

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

The square root of 18734743 is about 4328.3649337827. The cubic root of 18734743 is about 265.5925650454.

The spelling of 18734743 in words is "eighteen million, seven hundred thirty-four thousand, seven hundred forty-three".