11730189591 has 12 divisors (see below), whose sum is σ = 17111367000. Its totient is φ = 7742698800.

The previous prime is 11730189563. The next prime is 11730189629. The reversal of 11730189591 is 19598103711.

It is a happy number.

11730189591 is a `hidden beast` number, since 1 + 17 + 30 + 18 + 9 + 591 = 666.

It is not a de Polignac number, because 11730189591 - 2⁷ = 11730189463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11730189511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6451341 + ... + 6453158.

It is an arithmetic number, because the mean of its divisors is an integer number (1425947250).

Almost surely, 2^11730189591 is an apocalyptic number.

11730189591 is a deficient number, since it is larger than the sum of its proper divisors (5381177409).

11730189591 is a wasteful number, since it uses less digits than its factorization.

11730189591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904606 (or 12904603 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 45.

Adding to 11730189591 its sum of digits (45), we get a square (11730189636 = 108306²).

The spelling of 11730189591 in words is "eleven billion, seven hundred thirty million, one hundred eighty-nine thousand, five hundred ninety-one".