11231194789 has 8 divisors (see below), whose sum is σ = 11892785688. Its totient is φ = 10569707520.

The previous prime is 11231194769. The next prime is 11231194801. The reversal of 11231194789 is 98749113211.

It can be written as a sum of positive squares in 4 ways, for example, as 4104964900 + 7126229889 = 64070^2 + 84417^2 .

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 11231194789 - 2⁹ = 11231194277 is a prime.

It is a super-2 number, since 2×11231194789² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231194729) 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, 371719 + ... + 400795.

It is an arithmetic number, because the mean of its divisors is an integer number (1486598211).

Almost surely, 2^11231194789 is an apocalyptic number.

It is an amenable number.

11231194789 is a deficient number, since it is larger than the sum of its proper divisors (661590899).

11231194789 is a wasteful number, since it uses less digits than its factorization.

11231194789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51815.

The product of its digits is 108864, while the sum is 46.

The spelling of 11231194789 in words is "eleven billion, two hundred thirty-one million, one hundred ninety-four thousand, seven hundred eighty-nine".