2105683854 has 64 divisors (see below), whose sum is σ = 4513152000. Its totient is φ = 653028480.

The previous prime is 2105683837. The next prime is 2105683907. The reversal of 2105683854 is 4583865012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2061864 + ... + 2062884.

It is an arithmetic number, because the mean of its divisors is an integer number (70518000).

Almost surely, 2^2105683854 is an apocalyptic number.

2105683854 is an abundant number, since it is smaller than the sum of its proper divisors (2407468146).

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

2105683854 is a wasteful number, since it uses less digits than its factorization.

2105683854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 2105683854 is about 45887.7309746298. The cubic root of 2105683854 is about 1281.7334615108.

The spelling of 2105683854 in words is "two billion, one hundred five million, six hundred eighty-three thousand, eight hundred fifty-four".