1152639689 has 2 divisors, whose sum is σ = 1152639690. Its totient is φ = 1152639688.

The previous prime is 1152639673. The next prime is 1152639721. The reversal of 1152639689 is 9869362511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135690000 + 16949689 = 33700^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152639689 - 2⁴ = 1152639673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1152639289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576319844 + 576319845.

It is an arithmetic number, because the mean of its divisors is an integer number (576319845).

Almost surely, 2^1152639689 is an apocalyptic number.

It is an amenable number.

1152639689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152639689 is an equidigital number, since it uses as much as digits as its factorization.

1152639689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 50.

The square root of 1152639689 is about 33950.5476980858. The cubic root of 1152639689 is about 1048.4905564374.

It can be divided in two parts, 11526 and 39689, that added together give a palindrome (51215).

The spelling of 1152639689 in words is "one billion, one hundred fifty-two million, six hundred thirty-nine thousand, six hundred eighty-nine".