8221163851 has 8 divisors (see below), whose sum is σ = 8418263040. Its totient is φ = 8024333352.

The previous prime is 8221163809. The next prime is 8221163869. The reversal of 8221163851 is 1583611228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221163851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8221163851.

It is not an unprimeable number, because it can be changed into a prime (8221163801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 128308.

It is an arithmetic number, because the mean of its divisors is an integer number (1052282880).

Almost surely, 2^8221163851 is an apocalyptic number.

8221163851 is a deficient number, since it is larger than the sum of its proper divisors (197099189).

8221163851 is a wasteful number, since it uses less digits than its factorization.

8221163851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134345.

The product of its digits is 23040, while the sum is 37.

The square root of 8221163851 is about 90670.6338954350. The cubic root of 8221163851 is about 2018.2630439108.

The spelling of 8221163851 in words is "eight billion, two hundred twenty-one million, one hundred sixty-three thousand, eight hundred fifty-one".