1189335428 has 24 divisors (see below), whose sum is σ = 2183993280. Its totient is φ = 565627040.

The previous prime is 1189335403. The next prime is 1189335431. The reversal of 1189335428 is 8245339811.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19643 + ... + 52578.

It is an arithmetic number, because the mean of its divisors is an integer number (90999720).

Almost surely, 2^1189335428 is an apocalyptic number.

It is an amenable number.

1189335428 is a deficient number, since it is larger than the sum of its proper divisors (994657852).

1189335428 is a wasteful number, since it uses less digits than its factorization.

1189335428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72427 (or 72425 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 1189335428 is about 34486.7427861780. The cubic root of 1189335428 is about 1059.5011976172.

The spelling of 1189335428 in words is "one billion, one hundred eighty-nine million, three hundred thirty-five thousand, four hundred twenty-eight".