1152272789 has 2 divisors, whose sum is σ = 1152272790. Its totient is φ = 1152272788.

The previous prime is 1152272783. The next prime is 1152272809. The reversal of 1152272789 is 9872722511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598047025 + 554225764 = 24455^2 + 23542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152272789 - 2²⁸ = 883837333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1152272783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576136394 + 576136395.

It is an arithmetic number, because the mean of its divisors is an integer number (576136395).

Almost surely, 2^1152272789 is an apocalyptic number.

It is an amenable number.

1152272789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152272789 is an equidigital number, since it uses as much as digits as its factorization.

1152272789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 44.

The square root of 1152272789 is about 33945.1438205821. The cubic root of 1152272789 is about 1048.3792952996.

The spelling of 1152272789 in words is "one billion, one hundred fifty-two million, two hundred seventy-two thousand, seven hundred eighty-nine".