1309849989120 has 520 divisors, whose sum is σ = 4971793362624. Its totient is φ = 328739586048.

The previous prime is 1309849989067. The next prime is 1309849989127. The reversal of 1309849989120 is 219899489031.

1309849989120 is a `hidden beast` number, since 1 + 30 + 9 + 8 + 499 + 8 + 91 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (1309849989127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28177737 + ... + 28224183.

Almost surely, 2^{1309849989120} is an apocalyptic number.

1309849989120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1309849989120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485896681312).

1309849989120 is an abundant number, since it is smaller than the sum of its proper divisors (3661943373504).

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

1309849989120 is an equidigital number, since it uses as much as digits as its factorization.

1309849989120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46505 (or 46474 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The spelling of 1309849989120 in words is "one trillion, three hundred nine billion, eight hundred forty-nine million, nine hundred eighty-nine thousand, one hundred twenty".