2115813356 has 12 divisors (see below), whose sum is σ = 3735441192. Its totient is φ = 1048544448.

The previous prime is 2115813317. The next prime is 2115813377. The reversal of 2115813356 is 6533185112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340050 + ... + 2340953.

It is an arithmetic number, because the mean of its divisors is an integer number (311286766).

Almost surely, 2^2115813356 is an apocalyptic number.

It is an amenable number.

2115813356 is a deficient number, since it is larger than the sum of its proper divisors (1619627836).

2115813356 is a wasteful number, since it uses less digits than its factorization.

2115813356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681120 (or 4681118 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 2115813356 is about 45997.9712161308. The cubic root of 2115813356 is about 1283.7854564984.

Adding to 2115813356 its reverse (6533185112), we get a palindrome (8648998468).

The spelling of 2115813356 in words is "two billion, one hundred fifteen million, eight hundred thirteen thousand, three hundred fifty-six".