2138313305 has 8 divisors (see below), whose sum is σ = 2575446144. Its totient is φ = 1704337200.

The previous prime is 2138313293. The next prime is 2138313323. The reversal of 2138313305 is 5033138312.

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

It is not a de Polignac number, because 2138313305 - 2⁸ = 2138313049 is a prime.

It is a Duffinian number.

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, 787691 + ... + 790400.

It is an arithmetic number, because the mean of its divisors is an integer number (321930768).

Almost surely, 2^2138313305 is an apocalyptic number.

It is an amenable number.

2138313305 is a deficient number, since it is larger than the sum of its proper divisors (437132839).

2138313305 is a wasteful number, since it uses less digits than its factorization.

2138313305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578367.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2138313305 is about 46241.8998852772. The cubic root of 2138313305 is about 1288.3200905856.

The spelling of 2138313305 in words is "two billion, one hundred thirty-eight million, three hundred thirteen thousand, three hundred five".