2138581319 has 8 divisors (see below), whose sum is σ = 2485518720. Its totient is φ = 1802000376.

The previous prime is 2138581297. The next prime is 2138581327. The reversal of 2138581319 is 9131858312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138581319 is a prime.

It is a super-2 number, since 2×2138581319² = 9147060115951559522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138581339) 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, 2588669 + ... + 2589494.

It is an arithmetic number, because the mean of its divisors is an integer number (310689840).

Almost surely, 2^2138581319 is an apocalyptic number.

2138581319 is a deficient number, since it is larger than the sum of its proper divisors (346937401).

2138581319 is an equidigital number, since it uses as much as digits as its factorization.

2138581319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178229.

The product of its digits is 51840, while the sum is 41.

The square root of 2138581319 is about 46244.7977506660. The cubic root of 2138581319 is about 1288.3739139106.

The spelling of 2138581319 in words is "two billion, one hundred thirty-eight million, five hundred eighty-one thousand, three hundred nineteen".