2086770816 has 128 divisors (see below), whose sum is σ = 6632774400. Its totient is φ = 642069504.

The previous prime is 2086770787. The next prime is 2086770827. The reversal of 2086770816 is 6180776802.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2086770816² = 8709224877018611712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21705 + ... + 68151.

It is an arithmetic number, because the mean of its divisors is an integer number (51818550).

Almost surely, 2^2086770816 is an apocalyptic number.

2086770816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2086770816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3316387200).

2086770816 is an abundant number, since it is smaller than the sum of its proper divisors (4546003584).

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

2086770816 is a wasteful number, since it uses less digits than its factorization.

2086770816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46483 (or 46465 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 2086770816 is about 45681.1866746038. The cubic root of 2086770816 is about 1277.8844481035.

The spelling of 2086770816 in words is "two billion, eighty-six million, seven hundred seventy thousand, eight hundred sixteen".