1123693889 has 2 divisors, whose sum is σ = 1123693890. Its totient is φ = 1123693888.

The previous prime is 1123693873. The next prime is 1123693913. The reversal of 1123693889 is 9883963211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653671489 + 470022400 = 25567^2 + 21680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123693889 - 2⁴ = 1123693873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123693789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561846944 + 561846945.

It is an arithmetic number, because the mean of its divisors is an integer number (561846945).

Almost surely, 2^1123693889 is an apocalyptic number.

It is an amenable number.

1123693889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123693889 is an equidigital number, since it uses as much as digits as its factorization.

1123693889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The square root of 1123693889 is about 33521.5436547901. The cubic root of 1123693889 is about 1039.6392637572.

The spelling of 1123693889 in words is "one billion, one hundred twenty-three million, six hundred ninety-three thousand, eight hundred eighty-nine".