8518191512 has 16 divisors (see below), whose sum is σ = 15973293840. Its totient is φ = 4258646496.

The previous prime is 8518191503. The next prime is 8518191523. The reversal of 8518191512 is 2151918158.

It is a super-2 number, since 2×8518191512² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8518191512.

It is a congruent number.

It is an unprimeable number.

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, 32693 + ... + 134555.

It is an arithmetic number, because the mean of its divisors is an integer number (998330865).

Almost surely, 2^8518191512 is an apocalyptic number.

It is an amenable number.

8518191512 is a deficient number, since it is larger than the sum of its proper divisors (7455102328).

8518191512 is a wasteful number, since it uses less digits than its factorization.

8518191512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112322 (or 112318 counting only the distinct ones).

The product of its digits is 28800, while the sum is 41.

The square root of 8518191512 is about 92294.0491689470. The cubic root of 8518191512 is about 2042.2824248842.

The spelling of 8518191512 in words is "eight billion, five hundred eighteen million, one hundred ninety-one thousand, five hundred twelve".