1111332144 has 160 divisors (see below), whose sum is σ = 3239348224. Its totient is φ = 325969920.

The previous prime is 1111332137. The next prime is 1111332179. The reversal of 1111332144 is 4412331111.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1111332144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1411719 + ... + 1412505.

Almost surely, 2^1111332144 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 1111332144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1619674112).

1111332144 is an abundant number, since it is smaller than the sum of its proper divisors (2128016080).

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

1111332144 is a wasteful number, since it uses less digits than its factorization.

1111332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 909 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1111332144 is about 33336.6486617956. The cubic root of 1111332144 is about 1035.8128441553.

Adding to 1111332144 its reverse (4412331111), we get a palindrome (5523663255).

The spelling of 1111332144 in words is "one billion, one hundred eleven million, three hundred thirty-two thousand, one hundred forty-four".