2105651626 has 16 divisors (see below), whose sum is σ = 3511162368. Its totient is φ = 940489200.

The previous prime is 2105651617. The next prime is 2105651627. The reversal of 2105651626 is 6261565012.

It is a junction number, because it is equal to n+sod(n) for n = 2105651591 and 2105651600.

It is not an unprimeable number, because it can be changed into a prime (2105651627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305430 + ... + 1307041.

It is an arithmetic number, because the mean of its divisors is an integer number (219447648).

Almost surely, 2^2105651626 is an apocalyptic number.

2105651626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2105651626 is a deficient number, since it is larger than the sum of its proper divisors (1405510742).

2105651626 is a wasteful number, since it uses less digits than its factorization.

2105651626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612517.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2105651626 is about 45887.3798118829. The cubic root of 2105651626 is about 1281.7269223974.

The spelling of 2105651626 in words is "two billion, one hundred five million, six hundred fifty-one thousand, six hundred twenty-six".