245543816 has 16 divisors (see below), whose sum is σ = 526165440. Its totient is φ = 105233040.

The previous prime is 245543759. The next prime is 245543843. The reversal of 245543816 is 618345542.

It is a self number, because there is not a number n which added to its sum of digits gives 245543816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2192300 + ... + 2192411.

It is an arithmetic number, because the mean of its divisors is an integer number (32885340).

Almost surely, 2^245543816 is an apocalyptic number.

It is an amenable number.

245543816 is an abundant number, since it is smaller than the sum of its proper divisors (280621624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245543816 is a wasteful number, since it uses less digits than its factorization.

245543816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384724 (or 4384720 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 245543816 is about 15669.8377783562. The cubic root of 245543816 is about 626.1951029630.

The spelling of 245543816 in words is "two hundred forty-five million, five hundred forty-three thousand, eight hundred sixteen".