18713687973 has 32 divisors (see below), whose sum is σ = 25549804800. Its totient is φ = 12180934656.

The previous prime is 18713687969. The next prime is 18713687983. The reversal of 18713687973 is 37978631781.

It is not a de Polignac number, because 18713687973 - 2² = 18713687969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713687983) 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 31 ways as a sum of consecutive naturals, for example, 12567213 + ... + 12568701.

It is an arithmetic number, because the mean of its divisors is an integer number (798431400).

Almost surely, 2^18713687973 is an apocalyptic number.

It is an amenable number.

18713687973 is a deficient number, since it is larger than the sum of its proper divisors (6836116827).

18713687973 is a wasteful number, since it uses less digits than its factorization.

18713687973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its digits is 10668672, while the sum is 60.

The spelling of 18713687973 in words is "eighteen billion, seven hundred thirteen million, six hundred eighty-seven thousand, nine hundred seventy-three".