18135411829 has 2 divisors, whose sum is σ = 18135411830. Its totient is φ = 18135411828.

The previous prime is 18135411803. The next prime is 18135411881. The reversal of 18135411829 is 92811453181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16092191025 + 2043220804 = 126855^2 + 45202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18135411829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18135471829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9067705914 + 9067705915.

It is an arithmetic number, because the mean of its divisors is an integer number (9067705915).

Almost surely, 2^18135411829 is an apocalyptic number.

It is an amenable number.

18135411829 is a deficient number, since it is larger than the sum of its proper divisors (1).

18135411829 is an equidigital number, since it uses as much as digits as its factorization.

18135411829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 43.

The spelling of 18135411829 in words is "eighteen billion, one hundred thirty-five million, four hundred eleven thousand, eight hundred twenty-nine".