1152975661 has 2 divisors, whose sum is σ = 1152975662. Its totient is φ = 1152975660.

The previous prime is 1152975643. The next prime is 1152975709. The reversal of 1152975661 is 1665792511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909022500 + 243953161 = 30150^2 + 15619^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152975661 - 2¹⁹ = 1152451373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1152975601) 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, 576487830 + 576487831.

It is an arithmetic number, because the mean of its divisors is an integer number (576487831).

Almost surely, 2^1152975661 is an apocalyptic number.

It is an amenable number.

1152975661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152975661 is an equidigital number, since it uses as much as digits as its factorization.

1152975661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 1152975661 is about 33955.4952989939. The cubic root of 1152975661 is about 1048.5924180605.

The spelling of 1152975661 in words is "one billion, one hundred fifty-two million, nine hundred seventy-five thousand, six hundred sixty-one".