1168987049 has 2 divisors, whose sum is σ = 1168987050. Its totient is φ = 1168987048.

The previous prime is 1168987021. The next prime is 1168987087. The reversal of 1168987049 is 9407898611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955242649 + 213744400 = 30907^2 + 14620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168987049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1168987249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584493524 + 584493525.

It is an arithmetic number, because the mean of its divisors is an integer number (584493525).

Almost surely, 2^1168987049 is an apocalyptic number.

It is an amenable number.

1168987049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168987049 is an equidigital number, since it uses as much as digits as its factorization.

1168987049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 1168987049 is about 34190.4526001046. The cubic root of 1168987049 is about 1053.4240597648.

The spelling of 1168987049 in words is "one billion, one hundred sixty-eight million, nine hundred eighty-seven thousand, forty-nine".