1189782049 has 2 divisors, whose sum is σ = 1189782050. Its totient is φ = 1189782048.

The previous prime is 1189781987. The next prime is 1189782059. The reversal of 1189782049 is 9402879811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1071907600 + 117874449 = 32740^2 + 10857^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189782049 - 2¹⁹ = 1189257761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1189781993 and 1189782011.

It is not a weakly prime, because it can be changed into another prime (1189782059) 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 as a sum of consecutive naturals, namely, 594891024 + 594891025.

It is an arithmetic number, because the mean of its divisors is an integer number (594891025).

Almost surely, 2^1189782049 is an apocalyptic number.

It is an amenable number.

1189782049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189782049 is an equidigital number, since it uses as much as digits as its factorization.

1189782049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 1189782049 is about 34493.2174347364. The cubic root of 1189782049 is about 1059.6338028391.

The spelling of 1189782049 in words is "one billion, one hundred eighty-nine million, seven hundred eighty-two thousand, forty-nine".