1305971830899 has 12 divisors (see below), whose sum is σ = 1985688164200. Its totient is φ = 824824314144.

The previous prime is 1305971830831. The next prime is 1305971830903. The reversal of 1305971830899 is 9980381795031.

1305971830899 is a `hidden beast` number, since 1 + 3 + 0 + 597 + 1 + 8 + 30 + 8 + 9 + 9 = 666.

It is not a de Polignac number, because 1305971830899 - 2³² = 1301676863603 is a prime.

It is a super-2 number, since 2×1305971830899² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305971830099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3818630914 + ... + 3818631255.

Almost surely, 2^{1305971830899} is an apocalyptic number.

1305971830899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1305971830899 is a deficient number, since it is larger than the sum of its proper divisors (679716333301).

1305971830899 is a wasteful number, since it uses less digits than its factorization.

1305971830899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637262194 (or 7637262191 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 63.

The spelling of 1305971830899 in words is "one trillion, three hundred five billion, nine hundred seventy-one million, eight hundred thirty thousand, eight hundred ninety-nine".