1005357205 has 4 divisors (see below), whose sum is σ = 1206428652. Its totient is φ = 804285760.

The previous prime is 1005357191. The next prime is 1005357211. The reversal of 1005357205 is 5027535001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162384049 + 842973156 = 12743^2 + 29034^2 .

It is not a de Polignac number, because 1005357205 - 2⁷ = 1005357077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100535716 + ... + 100535725.

It is an arithmetic number, because the mean of its divisors is an integer number (301607163).

Almost surely, 2^1005357205 is an apocalyptic number.

It is an amenable number.

1005357205 is a deficient number, since it is larger than the sum of its proper divisors (201071447).

1005357205 is an equidigital number, since it uses as much as digits as its factorization.

1005357205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201071446.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 1005357205 is about 31707.3683076978. The cubic root of 1005357205 is about 1001.7825556075.

The spelling of 1005357205 in words is "one billion, five million, three hundred fifty-seven thousand, two hundred five".