2081856494 has 8 divisors (see below), whose sum is σ = 3157872480. Its totient is φ = 1029232336.

The previous prime is 2081856473. The next prime is 2081856563. The reversal of 2081856494 is 4946581802.

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

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 3 ways as a sum of consecutive naturals, for example, 5847734 + ... + 5848089.

It is an arithmetic number, because the mean of its divisors is an integer number (394734060).

Almost surely, 2^2081856494 is an apocalyptic number.

2081856494 is a deficient number, since it is larger than the sum of its proper divisors (1076015986).

2081856494 is a wasteful number, since it uses less digits than its factorization.

2081856494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695914.

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 2081856494 is about 45627.3656263431. The cubic root of 2081856494 is about 1276.8805250734.

The spelling of 2081856494 in words is "two billion, eighty-one million, eight hundred fifty-six thousand, four hundred ninety-four".