1309318949760 has 128 divisors (see below), whose sum is σ = 4173807808800. Its totient is φ = 349122134016.

The previous prime is 1309318949753. The next prime is 1309318949773. The reversal of 1309318949760 is 679498139031.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1309318949760² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 1309318949694 and 1309318949703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31715052 + ... + 31756308.

Almost surely, 2^{1309318949760} is an apocalyptic number.

1309318949760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1309318949760 is an abundant number, since it is smaller than the sum of its proper divisors (2864488859040).

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

1309318949760 is a wasteful number, since it uses less digits than its factorization.

1309318949760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57808 (or 57796 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 1309318949760 in words is "one trillion, three hundred nine billion, three hundred eighteen million, nine hundred forty-nine thousand, seven hundred sixty".