1115513266 has 8 divisors (see below), whose sum is σ = 1912308480. Its totient is φ = 478077108.

The previous prime is 1115513261. The next prime is 1115513291. The reversal of 1115513266 is 6623155111.

It is a happy number.

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

It is a super-3 number, since 3×1115513266³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1115513261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39839746 + ... + 39839773.

It is an arithmetic number, because the mean of its divisors is an integer number (239038560).

Almost surely, 2^1115513266 is an apocalyptic number.

1115513266 is a deficient number, since it is larger than the sum of its proper divisors (796795214).

1115513266 is an equidigital number, since it uses as much as digits as its factorization.

1115513266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79679528.

The product of its digits is 5400, while the sum is 31.

The square root of 1115513266 is about 33399.3003818942. The cubic root of 1115513266 is about 1037.1102180449.

Adding to 1115513266 its reverse (6623155111), we get a palindrome (7738668377).

The spelling of 1115513266 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, two hundred sixty-six".