204253613 has 8 divisors (see below), whose sum is σ = 207434136. Its totient is φ = 201096000.

The previous prime is 204253607. The next prime is 204253619. The reversal of 204253613 is 316352402.

204253613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204253607) and next prime (204253619).

It can be written as a sum of positive squares in 4 ways, for example, as 21409129 + 182844484 = 4627^2 + 13522^2 .

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 204253613 - 2⁴ = 204253597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204253619) 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, 12695 + ... + 23867.

It is an arithmetic number, because the mean of its divisors is an integer number (25929267).

Almost surely, 2^204253613 is an apocalyptic number.

It is an amenable number.

204253613 is a deficient number, since it is larger than the sum of its proper divisors (3180523).

204253613 is a wasteful number, since it uses less digits than its factorization.

204253613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 204253613 is about 14291.7323302670. The cubic root of 204253613 is about 588.9203784132.

It can be divided in two parts, 2042 and 53613, that added together give a palindrome (55655).

The spelling of 204253613 in words is "two hundred four million, two hundred fifty-three thousand, six hundred thirteen".