2105137688 has 16 divisors (see below), whose sum is σ = 3984023880. Its totient is φ = 1042731328.

The previous prime is 2105137663. The next prime is 2105137711. The reversal of 2105137688 is 8867315012.

It is a super-3 number, since 3×2105137688³ (a number of 29 digits) contains 333 as substring.

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, 1228781 + ... + 1230492.

Almost surely, 2^2105137688 is an apocalyptic number.

It is an amenable number.

2105137688 is a deficient number, since it is larger than the sum of its proper divisors (1878886192).

2105137688 is a wasteful number, since it uses less digits than its factorization.

2105137688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459386 (or 2459382 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2105137688 is about 45881.7794772609. The cubic root of 2105137688 is about 1281.6226345270.

The spelling of 2105137688 in words is "two billion, one hundred five million, one hundred thirty-seven thousand, six hundred eighty-eight".