1152988861 has 2 divisors, whose sum is σ = 1152988862. Its totient is φ = 1152988860.

The previous prime is 1152988847. The next prime is 1152988867. The reversal of 1152988861 is 1688892511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113223225 + 39765636 = 33365^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152988861 - 2⁵ = 1152988829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1152988867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576494430 + 576494431.

It is an arithmetic number, because the mean of its divisors is an integer number (576494431).

Almost surely, 2^1152988861 is an apocalyptic number.

It is an amenable number.

1152988861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152988861 is an equidigital number, since it uses as much as digits as its factorization.

1152988861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 49.

The square root of 1152988861 is about 33955.6896705103. The cubic root of 1152988861 is about 1048.5964196966.

The spelling of 1152988861 in words is "one billion, one hundred fifty-two million, nine hundred eighty-eight thousand, eight hundred sixty-one".