8457219318 has 16 divisors (see below), whose sum is σ = 17166893760. Its totient is φ = 2776997256.

The previous prime is 8457219299. The next prime is 8457219319. The reversal of 8457219318 is 8139127548.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457219319) 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, 10518528 + ... + 10519331.

It is an arithmetic number, because the mean of its divisors is an integer number (1072930860).

Almost surely, 2^8457219318 is an apocalyptic number.

8457219318 is an abundant number, since it is smaller than the sum of its proper divisors (8709674442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8457219318 is a wasteful number, since it uses less digits than its factorization.

8457219318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21037931.

The product of its digits is 483840, while the sum is 48.

The square root of 8457219318 is about 91963.1410838060. The cubic root of 8457219318 is about 2037.3979478313.

The spelling of 8457219318 in words is "eight billion, four hundred fifty-seven million, two hundred nineteen thousand, three hundred eighteen".