1131382189 has 32 divisors (see below), whose sum is σ = 1421139200. Its totient is φ = 878999040.

The previous prime is 1131382099. The next prime is 1131382207. The reversal of 1131382189 is 9812831311.

It is a cyclic number.

It is not a de Polignac number, because 1131382189 - 2⁹ = 1131381677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131082189) 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, 298297 + ... + 302065.

It is an arithmetic number, because the mean of its divisors is an integer number (44410600).

Almost surely, 2^1131382189 is an apocalyptic number.

1131382189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1131382189 is a deficient number, since it is larger than the sum of its proper divisors (289757011).

1131382189 is a wasteful number, since it uses less digits than its factorization.

1131382189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893.

The product of its digits is 10368, while the sum is 37.

The square root of 1131382189 is about 33636.0251664789. The cubic root of 1131382189 is about 1042.0049430397.

The spelling of 1131382189 in words is "one billion, one hundred thirty-one million, three hundred eighty-two thousand, one hundred eighty-nine".