2081961696 has 24 divisors (see below), whose sum is σ = 5465149704. Its totient is φ = 693987200.

The previous prime is 2081961683. The next prime is 2081961757. The reversal of 2081961696 is 6961691802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×2081961696² = 8669129007222392832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10843455 + ... + 10843646.

It is an arithmetic number, because the mean of its divisors is an integer number (227714571).

Almost surely, 2^2081961696 is an apocalyptic number.

It is an amenable number.

2081961696 is an abundant number, since it is smaller than the sum of its proper divisors (3383188008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2081961696 is a wasteful number, since it uses less digits than its factorization.

2081961696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21687114 (or 21687106 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 2081961696 is about 45628.5184506357. The cubic root of 2081961696 is about 1276.9020328194.

The spelling of 2081961696 in words is "two billion, eighty-one million, nine hundred sixty-one thousand, six hundred ninety-six".