1131383889 has 32 divisors (see below), whose sum is σ = 1724889600. Its totient is φ = 732481920.

The previous prime is 1131383887. The next prime is 1131383893. The reversal of 1131383889 is 9883831311.

It is not a de Polignac number, because 1131383889 - 2¹ = 1131383887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131383887) 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, 251272 + ... + 255734.

It is an arithmetic number, because the mean of its divisors is an integer number (53902800).

Almost surely, 2^1131383889 is an apocalyptic number.

It is an amenable number.

1131383889 is a deficient number, since it is larger than the sum of its proper divisors (593505711).

1131383889 is a wasteful number, since it uses less digits than its factorization.

1131383889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742 (or 4736 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1131383889 is about 33636.0504369939. The cubic root of 1131383889 is about 1042.0054649404.

The spelling of 1131383889 in words is "one billion, one hundred thirty-one million, three hundred eighty-three thousand, eight hundred eighty-nine".