1123638529 has 8 divisors (see below), whose sum is σ = 1210894272. Its totient is φ = 1036500240.

The previous prime is 1123638521. The next prime is 1123638601. The reversal of 1123638529 is 9258363211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123638529 - 2³ = 1123638521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123638491 and 1123638500.

It is not an unprimeable number, because it can be changed into a prime (1123638521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8959 + ... + 48244.

It is an arithmetic number, because the mean of its divisors is an integer number (151361784).

Almost surely, 2^1123638529 is an apocalyptic number.

It is an amenable number.

1123638529 is a deficient number, since it is larger than the sum of its proper divisors (87255743).

1123638529 is a wasteful number, since it uses less digits than its factorization.

1123638529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58727.

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

The square root of 1123638529 is about 33520.7179069900. The cubic root of 1123638529 is about 1039.6221904910.

The spelling of 1123638529 in words is "one billion, one hundred twenty-three million, six hundred thirty-eight thousand, five hundred twenty-nine".