2115020650 has 24 divisors (see below), whose sum is σ = 4008168684. Its totient is φ = 830044800.

The previous prime is 2115020647. The next prime is 2115020651. The reversal of 2115020650 is 560205112.

It can be written as a sum of positive squares in 6 ways, for example, as 1067786329 + 1047234321 = 32677^2 + 32361^2 .

It is not an unprimeable number, because it can be changed into a prime (2115020651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396411 + ... + 401710.

Almost surely, 2^2115020650 is an apocalyptic number.

2115020650 is a deficient number, since it is larger than the sum of its proper divisors (1893148034).

2115020650 is a wasteful number, since it uses less digits than its factorization.

2115020650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798186 (or 798181 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2115020650 is about 45989.3536592981. The cubic root of 2115020650 is about 1283.6251097221.

Adding to 2115020650 its reverse (560205112), we get a palindrome (2675225762).

The spelling of 2115020650 in words is "two billion, one hundred fifteen million, twenty thousand, six hundred fifty".