1152991849 has 2 divisors, whose sum is σ = 1152991850. Its totient is φ = 1152991848.

The previous prime is 1152991837. The next prime is 1152991907. The reversal of 1152991849 is 9481992511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 882981225 + 270010624 = 29715^2 + 16432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152991849 - 2⁹ = 1152991337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1152991249) 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, 576495924 + 576495925.

It is an arithmetic number, because the mean of its divisors is an integer number (576495925).

Almost surely, 2^1152991849 is an apocalyptic number.

It is an amenable number.

1152991849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152991849 is an equidigital number, since it uses as much as digits as its factorization.

1152991849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 49.

The square root of 1152991849 is about 33955.7336689991. The cubic root of 1152991849 is about 1048.5973255172.

The spelling of 1152991849 in words is "one billion, one hundred fifty-two million, nine hundred ninety-one thousand, eight hundred forty-nine".