1800245005 has 32 divisors (see below), whose sum is σ = 2477206368. Its totient is φ = 1244160000.

The previous prime is 1800244991. The next prime is 1800245071. The reversal of 1800245005 is 5005420081.

It can be written as a sum of positive squares in 16 ways, for example, as 1317036681 + 483208324 = 36291^2 + 21982^2 .

It is not a de Polignac number, because 1800245005 - 2⁷ = 1800244877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195505 + ... + 204505.

It is an arithmetic number, because the mean of its divisors is an integer number (77412699).

Almost surely, 2^1800245005 is an apocalyptic number.

It is an amenable number.

1800245005 is a deficient number, since it is larger than the sum of its proper divisors (676961363).

1800245005 is a wasteful number, since it uses less digits than its factorization.

1800245005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1800245005 is about 42429.2941845607. The cubic root of 1800245005 is about 1216.4955880885.

Adding to 1800245005 its reverse (5005420081), we get a palindrome (6805665086).

The spelling of 1800245005 in words is "one billion, eight hundred million, two hundred forty-five thousand, five".