2081803889618 has 16 divisors (see below), whose sum is σ = 3126463702656. Its totient is φ = 1039650020640.

The previous prime is 2081803889603. The next prime is 2081803889629. The reversal of 2081803889618 is 8169883081802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5849630 + ... + 6195302.

It is an arithmetic number, because the mean of its divisors is an integer number (195403981416).

Almost surely, 2^{2081803889618} is an apocalyptic number.

2081803889618 is a deficient number, since it is larger than the sum of its proper divisors (1044659813038).

2081803889618 is a wasteful number, since it uses less digits than its factorization.

2081803889618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349289.

The product of its (nonzero) digits is 10616832, while the sum is 62.

The spelling of 2081803889618 in words is "two trillion, eighty-one billion, eight hundred three million, eight hundred eighty-nine thousand, six hundred eighteen".