18376238813 has 8 divisors (see below), whose sum is σ = 18809633568. Its totient is φ = 17943118704.

The previous prime is 18376238789. The next prime is 18376238819. The reversal of 18376238813 is 31883267381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18376238813 - 2⁸ = 18376238557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18376238819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69995 + ... + 204087.

It is an arithmetic number, because the mean of its divisors is an integer number (2351204196).

Almost surely, 2^18376238813 is an apocalyptic number.

It is an amenable number.

18376238813 is a deficient number, since it is larger than the sum of its proper divisors (433394755).

18376238813 is a wasteful number, since it uses less digits than its factorization.

18376238813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137323.

The product of its digits is 1161216, while the sum is 50.

The spelling of 18376238813 in words is "eighteen billion, three hundred seventy-six million, two hundred thirty-eight thousand, eight hundred thirteen".