2105770770 has 160 divisors (see below), whose sum is σ = 5817873600. Its totient is φ = 546321024.

The previous prime is 2105770747. The next prime is 2105770781. The reversal of 2105770770 is 770775012.

It is a happy number.

2105770770 is a `hidden beast` number, since 2 + 10 + 577 + 0 + 7 + 70 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6642652 + ... + 6642968.

It is an arithmetic number, because the mean of its divisors is an integer number (36361710).

Almost surely, 2^2105770770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105770770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2908936800).

2105770770 is an abundant number, since it is smaller than the sum of its proper divisors (3712102830).

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

2105770770 is a wasteful number, since it uses less digits than its factorization.

2105770770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 24010, while the sum is 36.

The square root of 2105770770 is about 45888.6780153885. The cubic root of 2105770770 is about 1281.7510965755.

The spelling of 2105770770 in words is "two billion, one hundred five million, seven hundred seventy thousand, seven hundred seventy".