7822165818 has 16 divisors (see below), whose sum is σ = 16324520256. Its totient is φ = 2494023840.

The previous prime is 7822165751. The next prime is 7822165831. The reversal of 7822165818 is 8185612287.

It is a super-2 number, since 2×7822165818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28341043 + ... + 28341318.

It is an arithmetic number, because the mean of its divisors is an integer number (1020282516).

Almost surely, 2^7822165818 is an apocalyptic number.

7822165818 is an abundant number, since it is smaller than the sum of its proper divisors (8502354438).

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

7822165818 is a wasteful number, since it uses less digits than its factorization.

7822165818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56682389.

The product of its digits is 430080, while the sum is 48.

The square root of 7822165818 is about 88443.0088701193. The cubic root of 7822165818 is about 1985.0692992914.

The spelling of 7822165818 in words is "seven billion, eight hundred twenty-two million, one hundred sixty-five thousand, eight hundred eighteen".