2138813513 has 8 divisors (see below), whose sum is σ = 2150702400. Its totient is φ = 2126947248.

The previous prime is 2138813491. The next prime is 2138813519. The reversal of 2138813513 is 3153188312.

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 2138813513 - 2¹⁸ = 2138551369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138813519) 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, 205370 + ... + 215532.

It is an arithmetic number, because the mean of its divisors is an integer number (268837800).

Almost surely, 2^2138813513 is an apocalyptic number.

It is an amenable number.

2138813513 is a deficient number, since it is larger than the sum of its proper divisors (11888887).

2138813513 is a wasteful number, since it uses less digits than its factorization.

2138813513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11311.

The product of its digits is 17280, while the sum is 35.

The square root of 2138813513 is about 46247.3081703141. The cubic root of 2138813513 is about 1288.4205401271.

The spelling of 2138813513 in words is "two billion, one hundred thirty-eight million, eight hundred thirteen thousand, five hundred thirteen".