18341833513 has 16 divisors (see below), whose sum is σ = 19080064080. Its totient is φ = 17619148800.

The previous prime is 18341833487. The next prime is 18341833537. The reversal of 18341833513 is 31533814381.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6889 + 18341826624 = 83^2 + 135432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18341833513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18341837513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868981 + ... + 889837.

It is an arithmetic number, because the mean of its divisors is an integer number (1192504005).

Almost surely, 2^18341833513 is an apocalyptic number.

It is an amenable number.

18341833513 is a deficient number, since it is larger than the sum of its proper divisors (738230567).

18341833513 is a wasteful number, since it uses less digits than its factorization.

18341833513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21228.

The product of its digits is 103680, while the sum is 40.

The spelling of 18341833513 in words is "eighteen billion, three hundred forty-one million, eight hundred thirty-three thousand, five hundred thirteen".