1129194289 has 4 divisors (see below), whose sum is σ = 1130206324. Its totient is φ = 1128182256.

The previous prime is 1129194229. The next prime is 1129194293. The reversal of 1129194289 is 9824919211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94478400 + 1034715889 = 9720^2 + 32167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129194289 - 2²¹ = 1127097137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129194229) 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 3 ways as a sum of consecutive naturals, for example, 504342 + ... + 506575.

It is an arithmetic number, because the mean of its divisors is an integer number (282551581).

Almost surely, 2^1129194289 is an apocalyptic number.

It is an amenable number.

1129194289 is a deficient number, since it is larger than the sum of its proper divisors (1012035).

1129194289 is a wasteful number, since it uses less digits than its factorization.

1129194289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012034.

The product of its digits is 93312, while the sum is 46.

The square root of 1129194289 is about 33603.4862625889. The cubic root of 1129194289 is about 1041.3328230432.

The spelling of 1129194289 in words is "one billion, one hundred twenty-nine million, one hundred ninety-four thousand, two hundred eighty-nine".