2105358256 has 20 divisors (see below), whose sum is σ = 4100273032. Its totient is φ = 1047223296.

The previous prime is 2105358253. The next prime is 2105358263. The reversal of 2105358256 is 6528535012.

It is a happy number.

It is a super-2 number, since 2×2105358256² = 8865066772214723072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2105358253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337806 + ... + 343981.

Almost surely, 2^2105358256 is an apocalyptic number.

It is an amenable number.

2105358256 is a deficient number, since it is larger than the sum of its proper divisors (1994914776).

2105358256 is a wasteful number, since it uses less digits than its factorization.

2105358256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681988 (or 681982 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 2105358256 is about 45884.1830699861. The cubic root of 2105358256 is about 1281.6673940805.

It can be divided in two parts, 210535 and 8256, that added together give a triangular number (218791 = T₆₆₁).

The spelling of 2105358256 in words is "two billion, one hundred five million, three hundred fifty-eight thousand, two hundred fifty-six".