1309290983920 has 40 divisors (see below), whose sum is σ = 3044162437920. Its totient is φ = 523705916160.

The previous prime is 1309290983887. The next prime is 1309290983947. The reversal of 1309290983920 is 293890929031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×1309290983920³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4791790 + ... + 5057650.

It is an arithmetic number, because the mean of its divisors is an integer number (76104060948).

Almost surely, 2^{1309290983920} is an apocalyptic number.

1309290983920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1309290983920 is an abundant number, since it is smaller than the sum of its proper divisors (1734871454000).

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

1309290983920 is a wasteful number, since it uses less digits than its factorization.

1309290983920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327433 (or 327427 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 55.

The spelling of 1309290983920 in words is "one trillion, three hundred nine billion, two hundred ninety million, nine hundred eighty-three thousand, nine hundred twenty".