18871713748 has 24 divisors (see below), whose sum is σ = 34772635520. Its totient is φ = 8936930880.

The previous prime is 18871713743. The next prime is 18871713761. The reversal of 18871713748 is 84731717881.

It is a happy number.

It is a super-2 number, since 2×18871713748² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18871713743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285733 + ... + 345523.

Almost surely, 2^18871713748 is an apocalyptic number.

It is an amenable number.

18871713748 is a deficient number, since it is larger than the sum of its proper divisors (15900921772).

18871713748 is a wasteful number, since it uses less digits than its factorization.

18871713748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63967 (or 63965 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 55.

The spelling of 18871713748 in words is "eighteen billion, eight hundred seventy-one million, seven hundred thirteen thousand, seven hundred forty-eight".