2081761834 has 4 divisors (see below), whose sum is σ = 3122642754. Its totient is φ = 1040880916.

The previous prime is 2081761813. The next prime is 2081761849. The reversal of 2081761834 is 4381671802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1616281209 + 465480625 = 40203^2 + 21575^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520440457 + ... + 520440460.

Almost surely, 2^2081761834 is an apocalyptic number.

2081761834 is a deficient number, since it is larger than the sum of its proper divisors (1040880920).

2081761834 is a wasteful number, since it uses less digits than its factorization.

2081761834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040880919.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2081761834 is about 45626.3282984726. The cubic root of 2081761834 is about 1276.8611719394.

The spelling of 2081761834 in words is "two billion, eighty-one million, seven hundred sixty-one thousand, eight hundred thirty-four".