18276343699 has 2 divisors, whose sum is σ = 18276343700. Its totient is φ = 18276343698.

The previous prime is 18276343681. The next prime is 18276343727. The reversal of 18276343699 is 99634367281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18276343699 - 2⁷ = 18276343571 is a prime.

It is not a weakly prime, because it can be changed into another prime (18276343609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9138171849 + 9138171850.

It is an arithmetic number, because the mean of its divisors is an integer number (9138171850).

Almost surely, 2^18276343699 is an apocalyptic number.

18276343699 is a deficient number, since it is larger than the sum of its proper divisors (1).

18276343699 is an equidigital number, since it uses as much as digits as its factorization.

18276343699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 58.

The spelling of 18276343699 in words is "eighteen billion, two hundred seventy-six million, three hundred forty-three thousand, six hundred ninety-nine".