11499188949 has 64 divisors (see below), whose sum is σ = 18571468800. Its totient is φ = 7024857840.

The previous prime is 11499188947. The next prime is 11499188993. The reversal of 11499188949 is 94988199411.

It is a happy number.

11499188949 is a `hidden beast` number, since 11 + 499 + 18 + 89 + 49 = 666.

It is not a de Polignac number, because 11499188949 - 2¹ = 11499188947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11499188947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5739982 + ... + 5741984.

It is an arithmetic number, because the mean of its divisors is an integer number (290179200).

Almost surely, 2^11499188949 is an apocalyptic number.

11499188949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11499188949 is a deficient number, since it is larger than the sum of its proper divisors (7072279851).

11499188949 is an equidigital number, since it uses as much as digits as its factorization.

11499188949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2056 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 63.

The spelling of 11499188949 in words is "eleven billion, four hundred ninety-nine million, one hundred eighty-eight thousand, nine hundred forty-nine".