1279051011 has 12 divisors (see below), whose sum is σ = 2111449392. Its totient is φ = 730886256.

The previous prime is 1279050991. The next prime is 1279051019. The reversal of 1279051011 is 1101509721.

It is not a de Polignac number, because 1279051011 - 2⁹ = 1279050499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1279051019) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10151136 + ... + 10151261.

It is an arithmetic number, because the mean of its divisors is an integer number (175954116).

Almost surely, 2^1279051011 is an apocalyptic number.

1279051011 is a deficient number, since it is larger than the sum of its proper divisors (832398381).

1279051011 is a wasteful number, since it uses less digits than its factorization.

1279051011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302410 (or 20302407 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The square root of 1279051011 is about 35763.8226564220. The cubic root of 1279051011 is about 1085.4986519168.

The spelling of 1279051011 in words is "one billion, two hundred seventy-nine million, fifty-one thousand, eleven".