8158432212 has 192 divisors, whose sum is σ = 25532559360. Its totient is φ = 2202380928.

The previous prime is 8158432193. The next prime is 8158432231. The reversal of 8158432212 is 2122348518.

It is a happy number.

8158432212 is a `hidden beast` number, since 8 + 1 + 5 + 8 + 432 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (8158432193) and next prime (8158432231).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 63 ways as a sum of consecutive naturals, for example, 1440378 + ... + 1446030.

It is an arithmetic number, because the mean of its divisors is an integer number (132982080).

Almost surely, 2^8158432212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8158432212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12766279680).

8158432212 is an abundant number, since it is smaller than the sum of its proper divisors (17374127148).

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

8158432212 is a wasteful number, since it uses less digits than its factorization.

8158432212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5779 (or 5771 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 8158432212 is about 90324.0400557902. The cubic root of 8158432212 is about 2013.1164753223.

The spelling of 8158432212 in words is "eight billion, one hundred fifty-eight million, four hundred thirty-two thousand, two hundred twelve".