1133557789 has 16 divisors (see below), whose sum is σ = 1432859008. Its totient is φ = 872638272.

The previous prime is 1133557781. The next prime is 1133557793. The reversal of 1133557789 is 9877553311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1133557789 - 2³ = 1133557781 is a prime.

It is a super-2 number, since 2×1133557789² = 2569906522005137042, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133557781) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 164967 + ... + 171700.

It is an arithmetic number, because the mean of its divisors is an integer number (89553688).

Almost surely, 2^1133557789 is an apocalyptic number.

It is an amenable number.

1133557789 is a deficient number, since it is larger than the sum of its proper divisors (299301219).

1133557789 is a wasteful number, since it uses less digits than its factorization.

1133557789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336724.

The product of its digits is 793800, while the sum is 49.

The square root of 1133557789 is about 33668.3499595689. The cubic root of 1133557789 is about 1042.6724258233.

The spelling of 1133557789 in words is "one billion, one hundred thirty-three million, five hundred fifty-seven thousand, seven hundred eighty-nine".