18763679471 has 4 divisors (see below), whose sum is σ = 18771124944. Its totient is φ = 18756234000.

The previous prime is 18763679443. The next prime is 18763679491. The reversal of 18763679471 is 17497636781.

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 18763679471 - 2³⁰ = 17689937647 is a prime.

It is a super-3 number, since 3×18763679471³ (a number of 32 digits) contains 333 as substring.

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 18763679471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18763679401) 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, 3718955 + ... + 3723996.

It is an arithmetic number, because the mean of its divisors is an integer number (4692781236).

Almost surely, 2^18763679471 is an apocalyptic number.

18763679471 is a deficient number, since it is larger than the sum of its proper divisors (7445473).

18763679471 is an equidigital number, since it uses as much as digits as its factorization.

18763679471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445472.

The product of its digits is 10668672, while the sum is 59.

The spelling of 18763679471 in words is "eighteen billion, seven hundred sixty-three million, six hundred seventy-nine thousand, four hundred seventy-one".