1163018220 has 192 divisors, whose sum is σ = 4084577280. Its totient is φ = 240694272.

The previous prime is 1163018191. The next prime is 1163018237. The reversal of 1163018220 is 228103611.

It is a super-2 number, since 2×1163018220² = 2705222760103936800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287371 + ... + 291389.

It is an arithmetic number, because the mean of its divisors is an integer number (21273840).

Almost surely, 2^1163018220 is an apocalyptic number.

1163018220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163018220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2042288640).

1163018220 is an abundant number, since it is smaller than the sum of its proper divisors (2921559060).

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

1163018220 is a wasteful number, since it uses less digits than its factorization.

1163018220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104 (or 4102 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1163018220 is about 34103.0529425153. The cubic root of 1163018220 is about 1051.6280774544.

The spelling of 1163018220 in words is "one billion, one hundred sixty-three million, eighteen thousand, two hundred twenty".