8469215518 has 4 divisors (see below), whose sum is σ = 12703823280. Its totient is φ = 4234607758.

The previous prime is 8469215483. The next prime is 8469215561. The reversal of 8469215518 is 8155129648.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8469215518² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117303878 + ... + 2117303881.

It is an arithmetic number, because the mean of its divisors is an integer number (3175955820).

Almost surely, 2^8469215518 is an apocalyptic number.

8469215518 is a deficient number, since it is larger than the sum of its proper divisors (4234607762).

8469215518 is a wasteful number, since it uses less digits than its factorization.

8469215518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234607761.

The product of its digits is 691200, while the sum is 49.

The square root of 8469215518 is about 92028.3408412865. The cubic root of 8469215518 is about 2038.3608130181.

The spelling of 8469215518 in words is "eight billion, four hundred sixty-nine million, two hundred fifteen thousand, five hundred eighteen".