1306678833 has 12 divisors (see below), whose sum is σ = 1887968628. Its totient is φ = 870868320.

The previous prime is 1306678831. The next prime is 1306678853. The reversal of 1306678833 is 3388766031.

It can be written as a sum of positive squares in 2 ways, for example, as 1220244624 + 86434209 = 34932^2 + 9297^2 .

It is not a de Polignac number, because 1306678833 - 2¹ = 1306678831 is a prime.

It is a super-2 number, since 2×1306678833² = 3414819145220483778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306678831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15391 + ... + 53387.

It is an arithmetic number, because the mean of its divisors is an integer number (157330719).

Almost surely, 2^1306678833 is an apocalyptic number.

It is an amenable number.

1306678833 is a deficient number, since it is larger than the sum of its proper divisors (581289795).

1306678833 is a wasteful number, since it uses less digits than its factorization.

1306678833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41824 (or 41821 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1306678833 is about 36148.0128499479. The cubic root of 1306678833 is about 1093.2587249452.

The spelling of 1306678833 in words is "one billion, three hundred six million, six hundred seventy-eight thousand, eight hundred thirty-three".