1117545205 has 12 divisors (see below), whose sum is σ = 1560002220. Its totient is φ = 766316544.

The previous prime is 1117545203. The next prime is 1117545217. The reversal of 1117545205 is 5025457111.

It can be written as a sum of positive squares in 2 ways, for example, as 256064004 + 861481201 = 16002^2 + 29351^2 .

It is not a de Polignac number, because 1117545205 - 2¹ = 1117545203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117545203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2280460 + ... + 2280949.

It is an arithmetic number, because the mean of its divisors is an integer number (130000185).

Almost surely, 2^1117545205 is an apocalyptic number.

It is an amenable number.

1117545205 is a deficient number, since it is larger than the sum of its proper divisors (442457015).

1117545205 is an equidigital number, since it uses as much as digits as its factorization.

1117545205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561428 (or 4561421 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 1117545205 is about 33429.7054279573. The cubic root of 1117545205 is about 1037.7395446301.

The spelling of 1117545205 in words is "one billion, one hundred seventeen million, five hundred forty-five thousand, two hundred five".