2138376613 has 2 divisors, whose sum is σ = 2138376614. Its totient is φ = 2138376612.

The previous prime is 2138376601. The next prime is 2138376649. The reversal of 2138376613 is 3166738312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1965769569 + 172607044 = 44337^2 + 13138^2 .

It is a cyclic number.

It is not a de Polignac number, because 2138376613 - 2⁹ = 2138376101 is a prime.

It is a super-3 number, since 3×2138376613³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138376313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069188306 + 1069188307.

It is an arithmetic number, because the mean of its divisors is an integer number (1069188307).

Almost surely, 2^2138376613 is an apocalyptic number.

It is an amenable number.

2138376613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138376613 is an equidigital number, since it uses as much as digits as its factorization.

2138376613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 2138376613 is about 46242.5844109085. The cubic root of 2138376613 is about 1288.3328046819.

The spelling of 2138376613 in words is "two billion, one hundred thirty-eight million, three hundred seventy-six thousand, six hundred thirteen".