1169188020 has 720 divisors, whose sum is σ = 5061184128. Its totient is φ = 222082560.

The previous prime is 1169188001. The next prime is 1169188057. The reversal of 1169188020 is 208819611.

It is a super-2 number, since 2×1169188020² = 2734001252223040800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 239 ways as a sum of consecutive naturals, for example, 11351289 + ... + 11351391.

Almost surely, 2^1169188020 is an apocalyptic number.

1169188020 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 1169188020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2530592064).

1169188020 is an abundant number, since it is smaller than the sum of its proper divisors (3891996108).

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

1169188020 is a wasteful number, since it uses less digits than its factorization.

1169188020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1169188020 is about 34193.3914667732. The cubic root of 1169188020 is about 1053.4844241506.

The spelling of 1169188020 in words is "one billion, one hundred sixty-nine million, one hundred eighty-eight thousand, twenty".