2138104138 has 8 divisors (see below), whose sum is σ = 3243191940. Its totient is φ = 1057040160.

The previous prime is 2138104117. The next prime is 2138104139. The reversal of 2138104138 is 8314018312.

It can be written as a sum of positive squares in 2 ways, for example, as 1658362729 + 479741409 = 40723^2 + 21903^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2138104139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6005733 + ... + 6006088.

Almost surely, 2^2138104138 is an apocalyptic number.

2138104138 is a deficient number, since it is larger than the sum of its proper divisors (1105087802).

2138104138 is a wasteful number, since it uses less digits than its factorization.

2138104138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011912.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2138104138 is about 46239.6381689995. The cubic root of 2138104138 is about 1288.2780819560.

It can be divided in two parts, 2138 and 104138, that added together give a square (106276 = 326²).

The spelling of 2138104138 in words is "two billion, one hundred thirty-eight million, one hundred four thousand, one hundred thirty-eight".