18135411839 has 8 divisors (see below), whose sum is σ = 18170575920. Its totient is φ = 18100270656.

The previous prime is 18135411829. The next prime is 18135411881. The reversal of 18135411839 is 93811453181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18135411839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18135411839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18135411829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2831789 + ... + 2838185.

It is an arithmetic number, because the mean of its divisors is an integer number (2271321990).

Almost surely, 2^18135411839 is an apocalyptic number.

18135411839 is a deficient number, since it is larger than the sum of its proper divisors (35164081).

18135411839 is an equidigital number, since it uses as much as digits as its factorization.

18135411839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449.

The product of its digits is 103680, while the sum is 44.

The spelling of 18135411839 in words is "eighteen billion, one hundred thirty-five million, four hundred eleven thousand, eight hundred thirty-nine".