8219894526 has 16 divisors (see below), whose sum is σ = 18266432400. Its totient is φ = 2739964824.

The previous prime is 8219894521. The next prime is 8219894549. The reversal of 8219894526 is 6254989128.

It is a happy number.

8219894526 is a `hidden beast` number, since 8 + 21 + 9 + 8 + 94 + 526 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 152220269 = 8219894526 / (8 + 2 + 1 + 9 + 8 + 9 + 4 + 5 + 2 + 6).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8219894521) 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, 76110081 + ... + 76110188.

It is an arithmetic number, because the mean of its divisors is an integer number (1141652025).

Almost surely, 2^8219894526 is an apocalyptic number.

8219894526 is an abundant number, since it is smaller than the sum of its proper divisors (10046537874).

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

8219894526 is a wasteful number, since it uses less digits than its factorization.

8219894526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152220280 (or 152220274 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 8219894526 is about 90663.6339774664. The cubic root of 8219894526 is about 2018.1591671507.

The spelling of 8219894526 in words is "eight billion, two hundred nineteen million, eight hundred ninety-four thousand, five hundred twenty-six".