2105318680 has 16 divisors (see below), whose sum is σ = 4736967120. Its totient is φ = 842127456.

The previous prime is 2105318671. The next prime is 2105318729. The reversal of 2105318680 is 868135012.

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, 26316444 + ... + 26316523.

It is an arithmetic number, because the mean of its divisors is an integer number (296060445).

Almost surely, 2^2105318680 is an apocalyptic number.

2105318680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105318680 is an abundant number, since it is smaller than the sum of its proper divisors (2631648440).

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

2105318680 is a wasteful number, since it uses less digits than its factorization.

2105318680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52632978 (or 52632974 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 2105318680 is about 45883.7518082382. The cubic root of 2105318680 is about 1281.6593632088.

The spelling of 2105318680 in words is "two billion, one hundred five million, three hundred eighteen thousand, six hundred eighty".