2081028861 has 16 divisors (see below), whose sum is σ = 3085427520. Its totient is φ = 1386262800.

The previous prime is 2081028811. The next prime is 2081028899. The reversal of 2081028861 is 1688201802.

It is not a de Polignac number, because 2081028861 - 2⁶ = 2081028797 is a prime.

It is a super-2 number, since 2×2081028861² = 8661362240629914642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081028811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5506 + ... + 64748.

It is an arithmetic number, because the mean of its divisors is an integer number (192839220).

Almost surely, 2^2081028861 is an apocalyptic number.

It is an amenable number.

2081028861 is a deficient number, since it is larger than the sum of its proper divisors (1004398659).

2081028861 is a wasteful number, since it uses less digits than its factorization.

2081028861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60553 (or 60547 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 2081028861 is about 45618.2952443425. The cubic root of 2081028861 is about 1276.7112965452.

The spelling of 2081028861 in words is "two billion, eighty-one million, twenty-eight thousand, eight hundred sixty-one".