1313366785 has 8 divisors (see below), whose sum is σ = 1576445760. Its totient is φ = 1050423024.

The previous prime is 1313366779. The next prime is 1313366809. The reversal of 1313366785 is 5876633131.

It is a happy number.

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 1313366785 - 2¹⁷ = 1313235713 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11037 + ... + 52426.

It is an arithmetic number, because the mean of its divisors is an integer number (197055720).

Almost surely, 2^1313366785 is an apocalyptic number.

It is an amenable number.

1313366785 is a deficient number, since it is larger than the sum of its proper divisors (263078975).

1313366785 is an equidigital number, since it uses as much as digits as its factorization.

1313366785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67607.

The product of its digits is 272160, while the sum is 43.

The square root of 1313366785 is about 36240.4026605666. The cubic root of 1313366785 is about 1095.1207542511.

The spelling of 1313366785 in words is "one billion, three hundred thirteen million, three hundred sixty-six thousand, seven hundred eighty-five".