18341431373 has 2 divisors, whose sum is σ = 18341431374. Its totient is φ = 18341431372.

The previous prime is 18341431331. The next prime is 18341431391. The reversal of 18341431373 is 37313414381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18338034724 + 3396649 = 135418^2 + 1843^2 .

It is a cyclic number.

It is not a de Polignac number, because 18341431373 - 2⁸ = 18341431117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18341431973) 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, 9170715686 + 9170715687.

It is an arithmetic number, because the mean of its divisors is an integer number (9170715687).

Almost surely, 2^18341431373 is an apocalyptic number.

It is an amenable number.

18341431373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18341431373 is an equidigital number, since it uses as much as digits as its factorization.

18341431373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The spelling of 18341431373 in words is "eighteen billion, three hundred forty-one million, four hundred thirty-one thousand, three hundred seventy-three".