2138100105 has 8 divisors (see below), whose sum is σ = 3420960192. Its totient is φ = 1140320048.

The previous prime is 2138100091. The next prime is 2138100113. The reversal of 2138100105 is 5010018312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2138100105 - 2⁴ = 2138100089 is a prime.

It is a super-2 number, since 2×2138100105² = 9142944118002022050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 71269989 + ... + 71270018.

It is an arithmetic number, because the mean of its divisors is an integer number (427620024).

Almost surely, 2^2138100105 is an apocalyptic number.

It is an amenable number.

2138100105 is a deficient number, since it is larger than the sum of its proper divisors (1282860087).

2138100105 is a wasteful number, since it uses less digits than its factorization.

2138100105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142540015.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 2138100105 is about 46239.5945592087. The cubic root of 2138100105 is about 1288.2772719504.

Adding to 2138100105 its reverse (5010018312), we get a palindrome (7148118417).

The spelling of 2138100105 in words is "two billion, one hundred thirty-eight million, one hundred thousand, one hundred five".