1139256266 has 16 divisors (see below), whose sum is σ = 1715852160. Its totient is φ = 567311040.

The previous prime is 1139256247. The next prime is 1139256281. The reversal of 1139256266 is 6626529311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877730 + ... + 879026.

It is an arithmetic number, because the mean of its divisors is an integer number (107240760).

Almost surely, 2^1139256266 is an apocalyptic number.

1139256266 is a deficient number, since it is larger than the sum of its proper divisors (576595894).

1139256266 is a wasteful number, since it uses less digits than its factorization.

1139256266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its digits is 116640, while the sum is 41.

The square root of 1139256266 is about 33752.8704853380. The cubic root of 1139256266 is about 1044.4167027799.

The spelling of 1139256266 in words is "one billion, one hundred thirty-nine million, two hundred fifty-six thousand, two hundred sixty-six".