1139271266 has 36 divisors (see below), whose sum is σ = 2054276694. Its totient is φ = 472469760.

The previous prime is 1139271253. The next prime is 1139271271. The reversal of 1139271266 is 6621729311.

It can be written as a sum of positive squares in only one way, i.e., 1131313225 + 7958041 = 33635^2 + 2821^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 88130 + ... + 100226.

Almost surely, 2^1139271266 is an apocalyptic number.

1139271266 is a deficient number, since it is larger than the sum of its proper divisors (915005428).

1139271266 is a wasteful number, since it uses less digits than its factorization.

1139271266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175 (or 12137 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 1139271266 is about 33753.0926879301. The cubic root of 1139271266 is about 1044.4212865252.

The spelling of 1139271266 in words is "one billion, one hundred thirty-nine million, two hundred seventy-one thousand, two hundred sixty-six".