1123534657 has 16 divisors (see below), whose sum is σ = 1355443200. Its totient is φ = 909763920.

The previous prime is 1123534627. The next prime is 1123534663. The reversal of 1123534657 is 7564353211.

It is a cyclic number.

It is not a de Polignac number, because 1123534657 - 2¹¹ = 1123532609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123534627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35982 + ... + 59512.

It is an arithmetic number, because the mean of its divisors is an integer number (84715200).

Almost surely, 2^1123534657 is an apocalyptic number.

It is an amenable number.

1123534657 is a deficient number, since it is larger than the sum of its proper divisors (231908543).

1123534657 is a wasteful number, since it uses less digits than its factorization.

1123534657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23916.

The product of its digits is 75600, while the sum is 37.

The square root of 1123534657 is about 33519.1685010234. The cubic root of 1123534657 is about 1039.5901543984.

Adding to 1123534657 its reverse (7564353211), we get a palindrome (8687887868).

The spelling of 1123534657 in words is "one billion, one hundred twenty-three million, five hundred thirty-four thousand, six hundred fifty-seven".