2115838873 has 4 divisors (see below), whose sum is σ = 2117157120. Its totient is φ = 2114520628.

The previous prime is 2115838867. The next prime is 2115838883. The reversal of 2115838873 is 3788385112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115838873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115838883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 656713 + ... + 659926.

It is an arithmetic number, because the mean of its divisors is an integer number (529289280).

Almost surely, 2^2115838873 is an apocalyptic number.

It is an amenable number.

2115838873 is a deficient number, since it is larger than the sum of its proper divisors (1318247).

2115838873 is a wasteful number, since it uses less digits than its factorization.

2115838873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318246.

The product of its digits is 322560, while the sum is 46.

The square root of 2115838873 is about 45998.2485862234. The cubic root of 2115838873 is about 1283.7906173540.

It can be divided in two parts, 21158 and 38873, that added together give a triangular number (60031 = T₃₄₆).

The spelling of 2115838873 in words is "two billion, one hundred fifteen million, eight hundred thirty-eight thousand, eight hundred seventy-three".