18363729679 has 2 divisors, whose sum is σ = 18363729680. Its totient is φ = 18363729678.

The previous prime is 18363729677. The next prime is 18363729721. The reversal of 18363729679 is 97692736381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18363729679 - 2¹ = 18363729677 is a prime.

Together with 18363729677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18363729677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9181864839 + 9181864840.

It is an arithmetic number, because the mean of its divisors is an integer number (9181864840).

Almost surely, 2^18363729679 is an apocalyptic number.

18363729679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18363729679 is an equidigital number, since it uses as much as digits as its factorization.

18363729679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 61.

The spelling of 18363729679 in words is "eighteen billion, three hundred sixty-three million, seven hundred twenty-nine thousand, six hundred seventy-nine".