1169128485 has 60 divisors (see below), whose sum is σ = 2437979148. Its totient is φ = 534449664.

The previous prime is 1169128481. The next prime is 1169128511. The reversal of 1169128485 is 5848219611.

It is a happy number.

1169128485 is a `hidden beast` number, since 1 + 169 + 1 + 2 + 8 + 485 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 628705476 + 540423009 = 25074^2 + 23247^2 .

It is not a de Polignac number, because 1169128485 - 2² = 1169128481 is a prime.

It is a super-2 number, since 2×1169128485² = 2733722828876790450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1169128485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1169128481) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 9612 + ... + 49301.

Almost surely, 2^1169128485 is an apocalyptic number.

1169128485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1169128485 is an abundant number, since it is smaller than the sum of its proper divisors (1268850663).

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

1169128485 is an equidigital number, since it uses as much as digits as its factorization.

1169128485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58944 (or 58928 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1169128485 is about 34192.5208927333. The cubic root of 1169128485 is about 1053.4665427210.

The spelling of 1169128485 in words is "one billion, one hundred sixty-nine million, one hundred twenty-eight thousand, four hundred eighty-five".