11910939193 has 4 divisors (see below), whose sum is σ = 11914182180. Its totient is φ = 11907696208.

The previous prime is 11910939181. The next prime is 11910939199. The reversal of 11910939193 is 39193901911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39193901911 = 29 ⋅1351513859.

It can be written as a sum of positive squares in 2 ways, for example, as 6823255609 + 5087683584 = 82603^2 + 71328^2 .

It is a cyclic number.

It is not a de Polignac number, because 11910939193 - 2¹³ = 11910931001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11910939199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615978 + ... + 1623331.

It is an arithmetic number, because the mean of its divisors is an integer number (2978545545).

Almost surely, 2^11910939193 is an apocalyptic number.

It is an amenable number.

11910939193 is a deficient number, since it is larger than the sum of its proper divisors (3242987).

11910939193 is an equidigital number, since it uses as much as digits as its factorization.

11910939193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242986.

The product of its (nonzero) digits is 59049, while the sum is 46.

The spelling of 11910939193 in words is "eleven billion, nine hundred ten million, nine hundred thirty-nine thousand, one hundred ninety-three".