8118293220 has 108 divisors (see below), whose sum is σ = 26159424564. Its totient is φ = 2037519360.

The previous prime is 8118293189. The next prime is 8118293251. The reversal of 8118293220 is 223928118.

It is an interprime number because it is at equal distance from previous prime (8118293189) and next prime (8118293251).

It can be written as a sum of positive squares in 6 ways, for example, as 2603448576 + 5514844644 = 51024^2 + 74262^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26011 + ... + 130050.

Almost surely, 2^8118293220 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 8118293220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13079712282).

8118293220 is an abundant number, since it is smaller than the sum of its proper divisors (18041131344).

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

8118293220 is a wasteful number, since it uses less digits than its factorization.

8118293220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156110 (or 156088 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 8118293220 is about 90101.5716844052. The cubic root of 8118293220 is about 2009.8095757820.

The spelling of 8118293220 in words is "eight billion, one hundred eighteen million, two hundred ninety-three thousand, two hundred twenty".