2113838365 has 8 divisors (see below), whose sum is σ = 2550621528. Its totient is φ = 1681727040.

The previous prime is 2113838359. The next prime is 2113838383. The reversal of 2113838365 is 5638383112.

It can be written as a sum of positive squares in 4 ways, for example, as 13816089 + 2100022276 = 3717^2 + 45826^2 .

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

It is not a de Polignac number, because 2113838365 - 2⁹ = 2113837853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166962 + ... + 1168771.

It is an arithmetic number, because the mean of its divisors is an integer number (318827691).

Almost surely, 2^2113838365 is an apocalyptic number.

It is an amenable number.

2113838365 is a deficient number, since it is larger than the sum of its proper divisors (436783163).

2113838365 is a wasteful number, since it uses less digits than its factorization.

2113838365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335919.

The product of its digits is 103680, while the sum is 40.

The square root of 2113838365 is about 45976.4979636336. The cubic root of 2113838365 is about 1283.3858853314.

The spelling of 2113838365 in words is "two billion, one hundred thirteen million, eight hundred thirty-eight thousand, three hundred sixty-five".