1123563405 has 32 divisors (see below), whose sum is σ = 1906568064. Its totient is φ = 563060736.

The previous prime is 1123563391. The next prime is 1123563431. The reversal of 1123563405 is 5043653211.

It is not a de Polignac number, because 1123563405 - 2¹¹ = 1123561357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168342 + ... + 174888.

It is an arithmetic number, because the mean of its divisors is an integer number (59580252).

Almost surely, 2^1123563405 is an apocalyptic number.

1123563405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123563405 is a deficient number, since it is larger than the sum of its proper divisors (783004659).

1123563405 is a wasteful number, since it uses less digits than its factorization.

1123563405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1123563405 is about 33519.5973275336. The cubic root of 1123563405 is about 1039.5990210238.

The spelling of 1123563405 in words is "one billion, one hundred twenty-three million, five hundred sixty-three thousand, four hundred five".