1166000220 has 144 divisors (see below), whose sum is σ = 4409653248. Its totient is φ = 242282880.

The previous prime is 1166000219. The next prime is 1166000279. The reversal of 1166000220 is 220006611.

It is a happy number.

1166000220 is a `hidden beast` number, since 1 + 1 + 660 + 0 + 0 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1166000193 and 1166000202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28204 + ... + 55923.

It is an arithmetic number, because the mean of its divisors is an integer number (30622592).

Almost surely, 2^1166000220 is an apocalyptic number.

1166000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166000220 is an abundant number, since it is smaller than the sum of its proper divisors (3243653028).

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

1166000220 is a wasteful number, since it uses less digits than its factorization.

1166000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84160 (or 84155 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1166000220 is about 34146.7453793184. The cubic root of 1166000220 is about 1052.5261082474.

Adding to 1166000220 its reverse (220006611), we get a palindrome (1386006831).

The spelling of 1166000220 in words is "one billion, one hundred sixty-six million, two hundred twenty", and thus it is an aban number.