18484163629 has 2 divisors, whose sum is σ = 18484163630. Its totient is φ = 18484163628.

The previous prime is 18484163617. The next prime is 18484163669. The reversal of 18484163629 is 92636148481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13719436900 + 4764726729 = 117130^2 + 69027^2 .

It is an emirp because it is prime and its reverse (92636148481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18484163629 - 2²⁵ = 18450609197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18484163609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242081814 + 9242081815.

It is an arithmetic number, because the mean of its divisors is an integer number (9242081815).

Almost surely, 2^18484163629 is an apocalyptic number.

It is an amenable number.

18484163629 is a deficient number, since it is larger than the sum of its proper divisors (1).

18484163629 is an equidigital number, since it uses as much as digits as its factorization.

18484163629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 52.

The spelling of 18484163629 in words is "eighteen billion, four hundred eighty-four million, one hundred sixty-three thousand, six hundred twenty-nine".