18847668029 has 2 divisors, whose sum is σ = 18847668030. Its totient is φ = 18847668028.

The previous prime is 18847668017. The next prime is 18847668041. The reversal of 18847668029 is 92086674881.

It is a balanced prime because it is at equal distance from previous prime (18847668017) and next prime (18847668041).

It can be written as a sum of positive squares in only one way, i.e., 18741062404 + 106605625 = 136898^2 + 10325^2 .

It is a cyclic number.

It is not a de Polignac number, because 18847668029 - 2²⁰ = 18846619453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18847664029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9423834014 + 9423834015.

It is an arithmetic number, because the mean of its divisors is an integer number (9423834015).

Almost surely, 2^18847668029 is an apocalyptic number.

It is an amenable number.

18847668029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18847668029 is an equidigital number, since it uses as much as digits as its factorization.

18847668029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 18847668029 in words is "eighteen billion, eight hundred forty-seven million, six hundred sixty-eight thousand, twenty-nine".