1137128188 has 96 divisors (see below), whose sum is σ = 2515968000. Its totient is φ = 438457536.

The previous prime is 1137128183. The next prime is 1137128189. The reversal of 1137128188 is 8818217311.

It is a self number, because there is not a number n which added to its sum of digits gives 1137128188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137128183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2434731 + ... + 2435197.

It is an arithmetic number, because the mean of its divisors is an integer number (26208000).

Almost surely, 2^1137128188 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 1137128188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257984000).

1137128188 is an abundant number, since it is smaller than the sum of its proper divisors (1378839812).

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

1137128188 is a wasteful number, since it uses less digits than its factorization.

1137128188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its digits is 21504, while the sum is 40.

The square root of 1137128188 is about 33721.3313497555. The cubic root of 1137128188 is about 1043.7659900834.

The spelling of 1137128188 in words is "one billion, one hundred thirty-seven million, one hundred twenty-eight thousand, one hundred eighty-eight".