1189662049 has 2 divisors, whose sum is σ = 1189662050. Its totient is φ = 1189662048.

The previous prime is 1189662043. The next prime is 1189662233. The reversal of 1189662049 is 9402669811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1173405025 + 16257024 = 34255^2 + 4032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189662049 - 2²⁹ = 652791137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1189662043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594831024 + 594831025.

It is an arithmetic number, because the mean of its divisors is an integer number (594831025).

Almost surely, 2^1189662049 is an apocalyptic number.

It is an amenable number.

1189662049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189662049 is an equidigital number, since it uses as much as digits as its factorization.

1189662049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1189662049 is about 34491.4779184656. The cubic root of 1189662049 is about 1059.5981771737.

The spelling of 1189662049 in words is "one billion, one hundred eighty-nine million, six hundred sixty-two thousand, forty-nine".