2081900979946 has 8 divisors (see below), whose sum is σ = 3122857617984. Its totient is φ = 1040948440620.

The previous prime is 2081900979943. The next prime is 2081900979947. The reversal of 2081900979946 is 6499790091802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2081900979943) 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, 1299681 + ... + 2419291.

It is an arithmetic number, because the mean of its divisors is an integer number (390357202248).

Almost surely, 2^{2081900979946} is an apocalyptic number.

2081900979946 is a deficient number, since it is larger than the sum of its proper divisors (1040956638038).

2081900979946 is a wasteful number, since it uses less digits than its factorization.

2081900979946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049356.

The product of its (nonzero) digits is 17635968, while the sum is 64.

The spelling of 2081900979946 in words is "two trillion, eighty-one billion, nine hundred million, nine hundred seventy-nine thousand, nine hundred forty-six".