1306944866 has 8 divisors (see below), whose sum is σ = 1978739280. Its totient is φ = 647365108.

The previous prime is 1306944851. The next prime is 1306944869. The reversal of 1306944866 is 6684496031.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1306944866.

It is not an unprimeable number, because it can be changed into a prime (1306944869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053396 + ... + 3053823.

It is an arithmetic number, because the mean of its divisors is an integer number (247342410).

Almost surely, 2^1306944866 is an apocalyptic number.

1306944866 is a deficient number, since it is larger than the sum of its proper divisors (671794414).

1306944866 is a wasteful number, since it uses less digits than its factorization.

1306944866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6107328.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 1306944866 is about 36151.6924361779. The cubic root of 1306944866 is about 1093.3329138367.

The spelling of 1306944866 in words is "one billion, three hundred six million, nine hundred forty-four thousand, eight hundred sixty-six".