1111448789 has 8 divisors (see below), whose sum is σ = 1213367040. Its totient is φ = 1009676800.

The previous prime is 1111448761. The next prime is 1111448791. The reversal of 1111448789 is 9878441111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1111448789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111448749) 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 7 ways as a sum of consecutive naturals, for example, 20357 + ... + 51354.

It is an arithmetic number, because the mean of its divisors is an integer number (151670880).

Almost surely, 2^1111448789 is an apocalyptic number.

It is an amenable number.

1111448789 is a deficient number, since it is larger than the sum of its proper divisors (101918251).

1111448789 is a wasteful number, since it uses less digits than its factorization.

1111448789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73131.

The product of its digits is 64512, while the sum is 44.

The square root of 1111448789 is about 33338.3981168862. The cubic root of 1111448789 is about 1035.8490823952.

The spelling of 1111448789 in words is "one billion, one hundred eleven million, four hundred forty-eight thousand, seven hundred eighty-nine".