1189327849 has 2 divisors, whose sum is σ = 1189327850. Its totient is φ = 1189327848.

The previous prime is 1189327829. The next prime is 1189327913. The reversal of 1189327849 is 9487239811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1031373225 + 157954624 = 32115^2 + 12568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189327849 - 2¹¹ = 1189325801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1189327796 and 1189327805.

It is not a weakly prime, because it can be changed into another prime (1189327829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594663924 + 594663925.

It is an arithmetic number, because the mean of its divisors is an integer number (594663925).

Almost surely, 2^1189327849 is an apocalyptic number.

It is an amenable number.

1189327849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189327849 is an equidigital number, since it uses as much as digits as its factorization.

1189327849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 1189327849 is about 34486.6329031989. The cubic root of 1189327849 is about 1059.4989470671.

The spelling of 1189327849 in words is "one billion, one hundred eighty-nine million, three hundred twenty-seven thousand, eight hundred forty-nine".