1123689253 has 2 divisors, whose sum is σ = 1123689254. Its totient is φ = 1123689252.

The previous prime is 1123689233. The next prime is 1123689263. The reversal of 1123689253 is 3529863211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935258724 + 188430529 = 30582^2 + 13727^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123689253 - 2²⁹ = 586818341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123689233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561844626 + 561844627.

It is an arithmetic number, because the mean of its divisors is an integer number (561844627).

Almost surely, 2^1123689253 is an apocalyptic number.

It is an amenable number.

1123689253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123689253 is an equidigital number, since it uses as much as digits as its factorization.

1123689253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 1123689253 is about 33521.4745051586. The cubic root of 1123689253 is about 1039.6378340160.

It can be divided in two parts, 11236 and 89253, that added together give a square (100489 = 317²).

The spelling of 1123689253 in words is "one billion, one hundred twenty-three million, six hundred eighty-nine thousand, two hundred fifty-three".