5201818889 has 4 divisors (see below), whose sum is σ = 5273076756. Its totient is φ = 5130561024.

The previous prime is 5201818861. The next prime is 5201818907. The reversal of 5201818889 is 9888181025.

It is a happy number.

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 2119681600 + 3082137289 = 46040^2 + 55517^2 .

It is a cyclic number.

It is not a de Polignac number, because 5201818889 - 2³² = 906851593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5201811889) 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, 35628824 + ... + 35628969.

It is an arithmetic number, because the mean of its divisors is an integer number (1318269189).

Almost surely, 2^5201818889 is an apocalyptic number.

It is an amenable number.

5201818889 is a deficient number, since it is larger than the sum of its proper divisors (71257867).

5201818889 is an equidigital number, since it uses as much as digits as its factorization.

5201818889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71257866.

The product of its (nonzero) digits is 368640, while the sum is 50.

The square root of 5201818889 is about 72123.6361326854. The cubic root of 5201818889 is about 1732.6801862086.

It can be divided in two parts, 52018 and 18889, that added together give a palindrome (70907).

The spelling of 5201818889 in words is "five billion, two hundred one million, eight hundred eighteen thousand, eight hundred eighty-nine".