1199113188 has 96 divisors (see below), whose sum is σ = 3593404416. Its totient is φ = 302493312.

The previous prime is 1199113163. The next prime is 1199113189. The reversal of 1199113188 is 8813119911.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1199113189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1245 + ... + 48987.

It is an arithmetic number, because the mean of its divisors is an integer number (37431296).

Almost surely, 2^1199113188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199113188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1796702208).

1199113188 is an abundant number, since it is smaller than the sum of its proper divisors (2394291228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1199113188 is a wasteful number, since it uses less digits than its factorization.

1199113188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47793 (or 47791 counting only the distinct ones).

The product of its digits is 15552, while the sum is 42.

The square root of 1199113188 is about 34628.2137569930. The cubic root of 1199113188 is about 1062.3967329024.

The spelling of 1199113188 in words is "one billion, one hundred ninety-nine million, one hundred thirteen thousand, one hundred eighty-eight".