1135556889 has 16 divisors (see below), whose sum is σ = 1536952320. Its totient is φ = 745621520.

The previous prime is 1135556887. The next prime is 1135556909. The reversal of 1135556889 is 9886555311.

It is a happy number.

1135556889 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1135556889 - 2¹ = 1135556887 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1135556887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276352 + ... + 280430.

It is an arithmetic number, because the mean of its divisors is an integer number (96059520).

Almost surely, 2^1135556889 is an apocalyptic number.

It is an amenable number.

1135556889 is a deficient number, since it is larger than the sum of its proper divisors (401395431).

1135556889 is a wasteful number, since it uses less digits than its factorization.

1135556889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460.

The product of its digits is 1296000, while the sum is 51.

The square root of 1135556889 is about 33698.0250014745. The cubic root of 1135556889 is about 1043.2850051844.

The spelling of 1135556889 in words is "one billion, one hundred thirty-five million, five hundred fifty-six thousand, eight hundred eighty-nine".