1913931444880 has 320 divisors, whose sum is σ = 5822150358528. Its totient is φ = 567816192000.

The previous prime is 1913931444869. The next prime is 1913931444889. The reversal of 1913931444880 is 884441393191.

It is not an unprimeable number, because it can be changed into a prime (1913931444889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31032954 + ... + 31094566.

Almost surely, 2^{1913931444880} is an apocalyptic number.

1913931444880 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 1913931444880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2911075179264).

1913931444880 is an abundant number, since it is smaller than the sum of its proper divisors (3908218913648).

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

1913931444880 is a wasteful number, since it uses less digits than its factorization.

1913931444880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61914 (or 61908 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 1913931444880 in words is "one trillion, nine hundred thirteen billion, nine hundred thirty-one million, four hundred forty-four thousand, eight hundred eighty".