1148541689 has 2 divisors, whose sum is σ = 1148541690. Its totient is φ = 1148541688.

The previous prime is 1148541643. The next prime is 1148541701. The reversal of 1148541689 is 9861458411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122786064 + 25755625 = 33508^2 + 5075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1148541689 is a prime.

It is a super-2 number, since 2×1148541689² = 2638296022741945442, which contains 22 as substring.

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 (1148543689) 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, 574270844 + 574270845.

It is an arithmetic number, because the mean of its divisors is an integer number (574270845).

Almost surely, 2^1148541689 is an apocalyptic number.

It is an amenable number.

1148541689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148541689 is an equidigital number, since it uses as much as digits as its factorization.

1148541689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 47.

The square root of 1148541689 is about 33890.1414721155. The cubic root of 1148541689 is about 1047.2465086850.

The spelling of 1148541689 in words is "one billion, one hundred forty-eight million, five hundred forty-one thousand, six hundred eighty-nine".