1279585670 has 16 divisors (see below), whose sum is σ = 2512641168. Its totient is φ = 465303840.

The previous prime is 1279585649. The next prime is 1279585679. The reversal of 1279585670 is 765859721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279585679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5816189 + ... + 5816408.

It is an arithmetic number, because the mean of its divisors is an integer number (157040073).

Almost surely, 2^1279585670 is an apocalyptic number.

1279585670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1279585670 is a deficient number, since it is larger than the sum of its proper divisors (1233055498).

1279585670 is a wasteful number, since it uses less digits than its factorization.

1279585670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11632615.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The square root of 1279585670 is about 35771.2967335544. The cubic root of 1279585670 is about 1085.6498814273.

The spelling of 1279585670 in words is "one billion, two hundred seventy-nine million, five hundred eighty-five thousand, six hundred seventy".