1189445499 has 16 divisors (see below), whose sum is σ = 1922336640. Its totient is φ = 720875880.

The previous prime is 1189445473. The next prime is 1189445501. The reversal of 1189445499 is 9945449811.

1189445499 is a `hidden beast` number, since 1 + 1 + 8 + 94 + 4 + 549 + 9 = 666.

It is not a de Polignac number, because 1189445499 - 2¹⁶ = 1189379963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1189445449) 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, 2002137 + ... + 2002730.

It is an arithmetic number, because the mean of its divisors is an integer number (120146040).

Almost surely, 2^1189445499 is an apocalyptic number.

1189445499 is a deficient number, since it is larger than the sum of its proper divisors (732891141).

1189445499 is a wasteful number, since it uses less digits than its factorization.

1189445499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004887 (or 4004881 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 1189445499 is about 34488.3385943713. The cubic root of 1189445499 is about 1059.5338816288.

The spelling of 1189445499 in words is "one billion, one hundred eighty-nine million, four hundred forty-five thousand, four hundred ninety-nine".