245084813 has 4 divisors (see below), whose sum is σ = 245372988. Its totient is φ = 244796640.

The previous prime is 245084783. The next prime is 245084867. The reversal of 245084813 is 318480542.

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 149768644 + 95316169 = 12238^2 + 9763^2 .

It is a cyclic number.

It is not a de Polignac number, because 245084813 - 2²² = 240890509 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 (245084893) 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, 142808 + ... + 144513.

It is an arithmetic number, because the mean of its divisors is an integer number (61343247).

Almost surely, 2^245084813 is an apocalyptic number.

It is an amenable number.

245084813 is a deficient number, since it is larger than the sum of its proper divisors (288175).

245084813 is an equidigital number, since it uses as much as digits as its factorization.

245084813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288174.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 245084813 is about 15655.1848599753. The cubic root of 245084813 is about 625.8046706569.

The spelling of 245084813 in words is "two hundred forty-five million, eighty-four thousand, eight hundred thirteen".