18068343929 has 2 divisors, whose sum is σ = 18068343930. Its totient is φ = 18068343928.

The previous prime is 18068343883. The next prime is 18068343967. The reversal of 18068343929 is 92934386081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13905126400 + 4163217529 = 117920^2 + 64523^2 .

It is a cyclic number.

It is not a de Polignac number, because 18068343929 - 2²⁰ = 18067295353 is a prime.

It is not a weakly prime, because it can be changed into another prime (18068343329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034171964 + 9034171965.

It is an arithmetic number, because the mean of its divisors is an integer number (9034171965).

Almost surely, 2^18068343929 is an apocalyptic number.

It is an amenable number.

18068343929 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068343929 is an equidigital number, since it uses as much as digits as its factorization.

18068343929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 18068343929 in words is "eighteen billion, sixty-eight million, three hundred forty-three thousand, nine hundred twenty-nine".