4001800522 has 16 divisors (see below), whose sum is σ = 6105434400. Its totient is φ = 1966784688.

The previous prime is 4001800519. The next prime is 4001800529. The reversal of 4001800522 is 2250081004.

It is a junction number, because it is equal to n+sod(n) for n = 4001800493 and 4001800502.

It is not an unprimeable number, because it can be changed into a prime (4001800529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30604 + ... + 94552.

It is an arithmetic number, because the mean of its divisors is an integer number (381589650).

Almost surely, 2^4001800522 is an apocalyptic number.

4001800522 is a deficient number, since it is larger than the sum of its proper divisors (2103633878).

4001800522 is a wasteful number, since it uses less digits than its factorization.

4001800522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64485.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4001800522 is about 63259.7859781394. The cubic root of 4001800522 is about 1587.6391954496.

Adding to 4001800522 its reverse (2250081004), we get a palindrome (6251881526).

The spelling of 4001800522 in words is "four billion, one million, eight hundred thousand, five hundred twenty-two".