8518731973 has 8 divisors (see below), whose sum is σ = 8908920000. Its totient is φ = 8130194688.

The previous prime is 8518731967. The next prime is 8518731979. The reversal of 8518731973 is 3791378158.

It is an interprime number because it is at equal distance from previous prime (8518731967) and next prime (8518731979).

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 8518731973 - 2⁵ = 8518731941 is a prime.

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 8518731973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8518731979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402123 + ... + 422776.

It is an arithmetic number, because the mean of its divisors is an integer number (1113615000).

Almost surely, 2^8518731973 is an apocalyptic number.

It is an amenable number.

8518731973 is a deficient number, since it is larger than the sum of its proper divisors (390188027).

8518731973 is a wasteful number, since it uses less digits than its factorization.

8518731973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825371.

The product of its digits is 1270080, while the sum is 52.

The square root of 8518731973 is about 92296.9770523390. The cubic root of 8518731973 is about 2042.3256167854.

The spelling of 8518731973 in words is "eight billion, five hundred eighteen million, seven hundred thirty-one thousand, nine hundred seventy-three".