9911481793 has 8 divisors (see below), whose sum is σ = 10369713600. Its totient is φ = 9455524848.

The previous prime is 9911481773. The next prime is 9911481857. The reversal of 9911481793 is 3971841199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-9911481793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9911481793.

It is not an unprimeable number, because it can be changed into a prime (9911481773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559798 + ... + 577231.

It is an arithmetic number, because the mean of its divisors is an integer number (1296214200).

Almost surely, 2^9911481793 is an apocalyptic number.

It is an amenable number.

9911481793 is a deficient number, since it is larger than the sum of its proper divisors (458231807).

9911481793 is a wasteful number, since it uses less digits than its factorization.

9911481793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137431.

The product of its digits is 489888, while the sum is 52.

The square root of 9911481793 is about 99556.4251718592. The cubic root of 9911481793 is about 2148.0589506996.

The spelling of 9911481793 in words is "nine billion, nine hundred eleven million, four hundred eighty-one thousand, seven hundred ninety-three".