1191109426373 has 8 divisors (see below), whose sum is σ = 1195669488288. Its totient is φ = 1186551838224.

The previous prime is 1191109426363. The next prime is 1191109426399. The reversal of 1191109426373 is 3736249011911.

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

It is a cyclic number.

It is not a de Polignac number, because 1191109426373 - 2¹⁰ = 1191109425349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191109426363) 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, 349286 + ... + 1582472.

It is an arithmetic number, because the mean of its divisors is an integer number (149458686036).

Almost surely, 2^{1191109426373} is an apocalyptic number.

It is an amenable number.

1191109426373 is a deficient number, since it is larger than the sum of its proper divisors (4560061915).

1191109426373 is a wasteful number, since it uses less digits than its factorization.

1191109426373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236883.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 1191109426373 in words is "one trillion, one hundred ninety-one billion, one hundred nine million, four hundred twenty-six thousand, three hundred seventy-three".