2113815515 has 8 divisors (see below), whose sum is σ = 2898947040. Its totient is φ = 1449473472.

The previous prime is 2113815511. The next prime is 2113815577. The reversal of 2113815515 is 5155183112.

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 2113815515 - 2² = 2113815511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113815511) 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, 30197330 + ... + 30197399.

It is an arithmetic number, because the mean of its divisors is an integer number (362368380).

Almost surely, 2^2113815515 is an apocalyptic number.

2113815515 is a deficient number, since it is larger than the sum of its proper divisors (785131525).

2113815515 is an equidigital number, since it uses as much as digits as its factorization.

2113815515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60394741.

The product of its digits is 6000, while the sum is 32.

The square root of 2113815515 is about 45976.2494664365. The cubic root of 2113815515 is about 1283.3812609675.

Adding to 2113815515 its reverse (5155183112), we get a palindrome (7268998627).

The spelling of 2113815515 in words is "two billion, one hundred thirteen million, eight hundred fifteen thousand, five hundred fifteen".