2645942216 has 16 divisors (see below), whose sum is σ = 5082145740. Its totient is φ = 1290703360.

The previous prime is 2645942213. The next prime is 2645942227. The reversal of 2645942216 is 6122495462.

It can be written as a sum of positive squares in 2 ways, for example, as 2517028900 + 128913316 = 50170^2 + 11354^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (2645942213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033121 + ... + 4033776.

Almost surely, 2^2645942216 is an apocalyptic number.

It is an amenable number.

2645942216 is a deficient number, since it is larger than the sum of its proper divisors (2436203524).

2645942216 is a wasteful number, since it uses less digits than its factorization.

2645942216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066944 (or 8066940 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 2645942216 is about 51438.7229234941. The cubic root of 2645942216 is about 1383.1208191599.

The spelling of 2645942216 in words is "two billion, six hundred forty-five million, nine hundred forty-two thousand, two hundred sixteen".