245328913 has 4 divisors (see below), whose sum is σ = 245421540. Its totient is φ = 245236288.

The previous prime is 245328911. The next prime is 245328949. The reversal of 245328913 is 319823542.

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 149621824 + 95707089 = 12232^2 + 9783^2 .

It is a cyclic number.

It is not a de Polignac number, because 245328913 - 2¹ = 245328911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245328911) 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, 42220 + ... + 47677.

It is an arithmetic number, because the mean of its divisors is an integer number (61355385).

Almost surely, 2^245328913 is an apocalyptic number.

It is an amenable number.

245328913 is a deficient number, since it is larger than the sum of its proper divisors (92627).

245328913 is an equidigital number, since it uses as much as digits as its factorization.

245328913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92626.

The product of its digits is 51840, while the sum is 37.

The square root of 245328913 is about 15662.9790589147. The cubic root of 245328913 is about 626.0123650618.

The spelling of 245328913 in words is "two hundred forty-five million, three hundred twenty-eight thousand, nine hundred thirteen".