1126261165 has 8 divisors (see below), whose sum is σ = 1351857528. Its totient is φ = 900779520.

The previous prime is 1126261163. The next prime is 1126261189. The reversal of 1126261165 is 5611626211.

It can be written as a sum of positive squares in 4 ways, for example, as 416731396 + 709529769 = 20414^2 + 26637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1126261165 - 2¹ = 1126261163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126261163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5352 + ... + 47761.

It is an arithmetic number, because the mean of its divisors is an integer number (168982191).

Almost surely, 2^1126261165 is an apocalyptic number.

It is an amenable number.

1126261165 is a deficient number, since it is larger than the sum of its proper divisors (225596363).

1126261165 is an equidigital number, since it uses as much as digits as its factorization.

1126261165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57359.

The product of its digits is 4320, while the sum is 31.

The square root of 1126261165 is about 33559.8147342920. The cubic root of 1126261165 is about 1040.4304077101.

Adding to 1126261165 its reverse (5611626211), we get a palindrome (6737887376).

It can be divided in two parts, 11262 and 61165, that added together give a palindrome (72427).

The spelling of 1126261165 in words is "one billion, one hundred twenty-six million, two hundred sixty-one thousand, one hundred sixty-five".