1309997594844 has 72 divisors (see below), whose sum is σ = 3424646184960. Its totient is φ = 421965247392.

The previous prime is 1309997594839. The next prime is 1309997594863. The reversal of 1309997594844 is 4484957999031.

1309997594844 is a `hidden beast` number, since 1 + 3 + 0 + 9 + 9 + 97 + 59 + 484 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4766524 + ... + 5033859.

Almost surely, 2^{1309997594844} is an apocalyptic number.

It is an amenable number.

1309997594844 is an abundant number, since it is smaller than the sum of its proper divisors (2114648590116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1309997594844 is a wasteful number, since it uses less digits than its factorization.

1309997594844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800519 (or 9800514 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 1309997594844 in words is "one trillion, three hundred nine billion, nine hundred ninety-seven million, five hundred ninety-four thousand, eight hundred forty-four".