18329768269 has 2 divisors, whose sum is σ = 18329768270. Its totient is φ = 18329768268.

The previous prime is 18329768267. The next prime is 18329768287. The reversal of 18329768269 is 96286792381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17892540169 + 437228100 = 133763^2 + 20910^2 .

It is a cyclic number.

It is not a de Polignac number, because 18329768269 - 2¹ = 18329768267 is a prime.

It is a super-2 number, since 2×18329768269² (a number of 21 digits) contains 22 as substring.

Together with 18329768267, 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 (18329768263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9164884134 + 9164884135.

It is an arithmetic number, because the mean of its divisors is an integer number (9164884135).

Almost surely, 2^18329768269 is an apocalyptic number.

It is an amenable number.

18329768269 is a deficient number, since it is larger than the sum of its proper divisors (1).

18329768269 is an equidigital number, since it uses as much as digits as its factorization.

18329768269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The spelling of 18329768269 in words is "eighteen billion, three hundred twenty-nine million, seven hundred sixty-eight thousand, two hundred sixty-nine".