8218152390 has 128 divisors (see below), whose sum is σ = 23588462592. Its totient is φ = 1792834560.

The previous prime is 8218152367. The next prime is 8218152391. The reversal of 8218152390 is 932518128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218152391) by changing a digit.

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, 466584 + ... + 483876.

It is an arithmetic number, because the mean of its divisors is an integer number (184284864).

Almost surely, 2^8218152390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8218152390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11794231296).

8218152390 is an abundant number, since it is smaller than the sum of its proper divisors (15370310202).

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

8218152390 is a wasteful number, since it uses less digits than its factorization.

8218152390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17414.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 8218152390 is about 90654.0257793332. The cubic root of 8218152390 is about 2018.0165799132.

The spelling of 8218152390 in words is "eight billion, two hundred eighteen million, one hundred fifty-two thousand, three hundred ninety".