18434711 has 2 divisors, whose sum is σ = 18434712. Its totient is φ = 18434710.

The previous prime is 18434701. The next prime is 18434723. The reversal of 18434711 is 11743481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18434711 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18434701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9217355 + 9217356.

It is an arithmetic number, because the mean of its divisors is an integer number (9217356).

Almost surely, 2^18434711 is an apocalyptic number.

18434711 is a deficient number, since it is larger than the sum of its proper divisors (1).

18434711 is an equidigital number, since it uses as much as digits as its factorization.

18434711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 18434711 is about 4293.5662333310. The cubic root of 18434711 is about 264.1671299780.

The spelling of 18434711 in words is "eighteen million, four hundred thirty-four thousand, seven hundred eleven".