1279051265 has 8 divisors (see below), whose sum is σ = 1560876480. Its totient is φ = 1005897712.

The previous prime is 1279051247. The next prime is 1279051283. The reversal of 1279051265 is 5621509721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1279051247) and next prime (1279051283).

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

It is a cyclic number.

It is not a de Polignac number, because 1279051265 - 2⁶ = 1279051201 is a prime.

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, 2167589 + ... + 2168178.

It is an arithmetic number, because the mean of its divisors is an integer number (195109560).

Almost surely, 2^1279051265 is an apocalyptic number.

It is an amenable number.

1279051265 is a deficient number, since it is larger than the sum of its proper divisors (281825215).

1279051265 is an equidigital number, since it uses as much as digits as its factorization.

1279051265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335831.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1279051265 is about 35763.8262074963. The cubic root of 1279051265 is about 1085.4987237712.

The spelling of 1279051265 in words is "one billion, two hundred seventy-nine million, fifty-one thousand, two hundred sixty-five".