18676370623 has 4 divisors (see below), whose sum is σ = 18676728360. Its totient is φ = 18676012888.

The previous prime is 18676370621. The next prime is 18676370711. The reversal of 18676370623 is 32607367681.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18676370623 - 2¹ = 18676370621 is a prime.

It is a super-3 number, since 3×18676370623³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18676370621) 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 3 ways as a sum of consecutive naturals, for example, 83668 + ... + 210601.

It is an arithmetic number, because the mean of its divisors is an integer number (4669182090).

Almost surely, 2^18676370623 is an apocalyptic number.

18676370623 is a deficient number, since it is larger than the sum of its proper divisors (357737).

18676370623 is an equidigital number, since it uses as much as digits as its factorization.

18676370623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357736.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 18676370623 in words is "eighteen billion, six hundred seventy-six million, three hundred seventy thousand, six hundred twenty-three".