1100133989 has 8 divisors (see below), whose sum is σ = 1105638360. Its totient is φ = 1094639616.

The previous prime is 1100133977. The next prime is 1100134003. The reversal of 1100133989 is 9893310011.

It can be written as a sum of positive squares in 4 ways, for example, as 41152225 + 1058981764 = 6415^2 + 32542^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100133989 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 (1100133919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309977 + ... + 313505.

It is an arithmetic number, because the mean of its divisors is an integer number (138204795).

Almost surely, 2^1100133989 is an apocalyptic number.

It is an amenable number.

1100133989 is a deficient number, since it is larger than the sum of its proper divisors (5504371).

1100133989 is a wasteful number, since it uses less digits than its factorization.

1100133989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1100133989 is about 33168.2678022233. The cubic root of 1100133989 is about 1032.3220271427.

The spelling of 1100133989 in words is "one billion, one hundred million, one hundred thirty-three thousand, nine hundred eighty-nine".