1013205245 has 8 divisors (see below), whose sum is σ = 1309373016. Its totient is φ = 748213056.

The previous prime is 1013205241. The next prime is 1013205247. The reversal of 1013205245 is 5425023101.

It can be written as a sum of positive squares in 4 ways, for example, as 32137561 + 981067684 = 5669^2 + 31322^2 .

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 1013205245 - 2² = 1013205241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013205245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013205241) 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, 7793822 + ... + 7793951.

It is an arithmetic number, because the mean of its divisors is an integer number (163671627).

Almost surely, 2^1013205245 is an apocalyptic number.

It is an amenable number.

1013205245 is a deficient number, since it is larger than the sum of its proper divisors (296167771).

1013205245 is a wasteful number, since it uses less digits than its factorization.

1013205245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15587791.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1013205245 is about 31830.8850803744. The cubic root of 1013205245 is about 1004.3825138482.

Adding to 1013205245 its reverse (5425023101), we get a palindrome (6438228346).

The spelling of 1013205245 in words is "one billion, thirteen million, two hundred five thousand, two hundred forty-five".