1819800006 has 64 divisors (see below), whose sum is σ = 3904008192. Its totient is φ = 564480000.

The previous prime is 1819799987. The next prime is 1819800013. The reversal of 1819800006 is 6000089181.

It is a self number, because there is not a number n which added to its sum of digits gives 1819800006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539766 + ... + 543126.

It is an arithmetic number, because the mean of its divisors is an integer number (61000128).

Almost surely, 2^1819800006 is an apocalyptic number.

1819800006 is an abundant number, since it is smaller than the sum of its proper divisors (2084208186).

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

1819800006 is a wasteful number, since it uses less digits than its factorization.

1819800006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1819800006 is about 42659.1139851732. The cubic root of 1819800006 is about 1220.8844267708.

Adding to 1819800006 its reverse (6000089181), we get a palindrome (7819889187).

The spelling of 1819800006 in words is "one billion, eight hundred nineteen million, eight hundred thousand, six".