1045666205 has 8 divisors (see below), whose sum is σ = 1255533912. Its totient is φ = 836043328.

The previous prime is 1045666201. The next prime is 1045666207. The reversal of 1045666205 is 5026665401.

It can be written as a sum of positive squares in 4 ways, for example, as 330585124 + 715081081 = 18182^2 + 26741^2 .

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 1045666205 - 2² = 1045666201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045666201) 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, 51674 + ... + 69003.

It is an arithmetic number, because the mean of its divisors is an integer number (156941739).

Almost surely, 2^1045666205 is an apocalyptic number.

It is an amenable number.

1045666205 is a deficient number, since it is larger than the sum of its proper divisors (209867707).

1045666205 is a wasteful number, since it uses less digits than its factorization.

1045666205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122415.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1045666205 is about 32336.7624384384. The cubic root of 1045666205 is about 1014.9960623336.

The spelling of 1045666205 in words is "one billion, forty-five million, six hundred sixty-six thousand, two hundred five".