1169557056 has 168 divisors, whose sum is σ = 3505931520. Its totient is φ = 386560512.

The previous prime is 1169557049. The next prime is 1169557091. The reversal of 1169557056 is 6507559611.

1169557056 is a `hidden beast` number, since 11 + 69 + 5 + 570 + 5 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2441425 + ... + 2441903.

It is an arithmetic number, because the mean of its divisors is an integer number (20868640).

Almost surely, 2^1169557056 is an apocalyptic number.

1169557056 is a gapful number since it is divisible by the number (16) 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 1169557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752965760).

1169557056 is an abundant number, since it is smaller than the sum of its proper divisors (2336374464).

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

1169557056 is an equidigital number, since it uses as much as digits as its factorization.

1169557056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The square root of 1169557056 is about 34198.7873469221. The cubic root of 1169557056 is about 1053.5952511448.

The spelling of 1169557056 in words is "one billion, one hundred sixty-nine million, five hundred fifty-seven thousand, fifty-six".