518802445 has 12 divisors (see below), whose sum is σ = 724206204. Its totient is φ = 355750080.

The previous prime is 518802443. The next prime is 518802457. The reversal of 518802445 is 544208815.

It can be written as a sum of positive squares in 2 ways, for example, as 147161161 + 371641284 = 12131^2 + 19278^2 .

It is not a de Polignac number, because 518802445 - 2¹ = 518802443 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 (518802443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1058536 + ... + 1059025.

It is an arithmetic number, because the mean of its divisors is an integer number (60350517).

Almost surely, 2^518802445 is an apocalyptic number.

It is an amenable number.

518802445 is a deficient number, since it is larger than the sum of its proper divisors (205403759).

518802445 is a wasteful number, since it uses less digits than its factorization.

518802445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117580 (or 2117573 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 518802445 is about 22777.2352360861. The cubic root of 518802445 is about 803.5273643713.

The spelling of 518802445 in words is "five hundred eighteen million, eight hundred two thousand, four hundred forty-five".