18196104013 has 4 divisors (see below), whose sum is σ = 18242881020. Its totient is φ = 18149327008.

The previous prime is 18196103963. The next prime is 18196104019. The reversal of 18196104013 is 31040169181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12618702889 + 5577401124 = 112333^2 + 74682^2 .

It is a cyclic number.

It is not a de Polignac number, because 18196104013 - 2²¹ = 18194006861 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 18196104013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18196104019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23387920 + ... + 23388697.

It is an arithmetic number, because the mean of its divisors is an integer number (4560720255).

Almost surely, 2^18196104013 is an apocalyptic number.

It is an amenable number.

18196104013 is a deficient number, since it is larger than the sum of its proper divisors (46777007).

18196104013 is an equidigital number, since it uses as much as digits as its factorization.

18196104013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46777006.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 18196104013 in words is "eighteen billion, one hundred ninety-six million, one hundred four thousand, thirteen".