18707040343 has 2 divisors, whose sum is σ = 18707040344. Its totient is φ = 18707040342.

The previous prime is 18707040301. The next prime is 18707040367. The reversal of 18707040343 is 34304070781.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18707040343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18707040383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9353520171 + 9353520172.

It is an arithmetic number, because the mean of its divisors is an integer number (9353520172).

Almost surely, 2^18707040343 is an apocalyptic number.

18707040343 is a deficient number, since it is larger than the sum of its proper divisors (1).

18707040343 is an equidigital number, since it uses as much as digits as its factorization.

18707040343 is an evil number, because the sum of its binary digits is even.

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

The spelling of 18707040343 in words is "eighteen billion, seven hundred seven million, forty thousand, three hundred forty-three".