245789213 has 4 divisors (see below), whose sum is σ = 260247420. Its totient is φ = 231331008.

The previous prime is 245789189. The next prime is 245789237. The reversal of 245789213 is 312987542.

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

It is an interprime number because it is at equal distance from previous prime (245789189) and next prime (245789237).

It can be written as a sum of positive squares in 2 ways, for example, as 204289849 + 41499364 = 14293^2 + 6442^2 .

It is a cyclic number.

It is not a de Polignac number, because 245789213 - 2²² = 241594909 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 (245789513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7229078 + ... + 7229111.

It is an arithmetic number, because the mean of its divisors is an integer number (65061855).

Almost surely, 2^245789213 is an apocalyptic number.

It is an amenable number.

245789213 is a deficient number, since it is larger than the sum of its proper divisors (14458207).

245789213 is a wasteful number, since it uses less digits than its factorization.

245789213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458206.

The product of its digits is 120960, while the sum is 41.

The square root of 245789213 is about 15677.6660571655. Note that the first 3 decimals coincide. The cubic root of 245789213 is about 626.4036404033.

The spelling of 245789213 in words is "two hundred forty-five million, seven hundred eighty-nine thousand, two hundred thirteen".