1166529649 has 2 divisors, whose sum is σ = 1166529650. Its totient is φ = 1166529648.

The previous prime is 1166529607. The next prime is 1166529653. The reversal of 1166529649 is 9469256611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727920400 + 438609249 = 26980^2 + 20943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166529649 - 2¹³ = 1166521457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166559649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583264824 + 583264825.

It is an arithmetic number, because the mean of its divisors is an integer number (583264825).

Almost surely, 2^1166529649 is an apocalyptic number.

It is an amenable number.

1166529649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166529649 is an equidigital number, since it uses as much as digits as its factorization.

1166529649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The square root of 1166529649 is about 34154.4967610416. The cubic root of 1166529649 is about 1052.6853859553.

It can be divided in two parts, 11665 and 29649, that added together give a palindrome (41314).

The spelling of 1166529649 in words is "one billion, one hundred sixty-six million, five hundred twenty-nine thousand, six hundred forty-nine".