1151143266 has 64 divisors (see below), whose sum is σ = 2865542400. Its totient is φ = 300174336.

The previous prime is 1151143127. The next prime is 1151143283. The reversal of 1151143266 is 6623411511.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 36750 + ... + 60438.

It is an arithmetic number, because the mean of its divisors is an integer number (44774100).

Almost surely, 2^1151143266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151143266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432771200).

1151143266 is an abundant number, since it is smaller than the sum of its proper divisors (1714399134).

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

1151143266 is a wasteful number, since it uses less digits than its factorization.

1151143266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23803.

The product of its digits is 4320, while the sum is 30.

The square root of 1151143266 is about 33928.5022657942. The cubic root of 1151143266 is about 1048.0366230670.

Adding to 1151143266 its reverse (6623411511), we get a palindrome (7774554777).

The spelling of 1151143266 in words is "one billion, one hundred fifty-one million, one hundred forty-three thousand, two hundred sixty-six".