2783969646 has 32 divisors (see below), whose sum is σ = 5639978400. Its totient is φ = 916033536.

The previous prime is 2783969641. The next prime is 2783969647. The reversal of 2783969646 is 6469693872.

It is a self number, because there is not a number n which added to its sum of digits gives 2783969646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783969641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225030 + ... + 237078.

It is an arithmetic number, because the mean of its divisors is an integer number (176249325).

Almost surely, 2^2783969646 is an apocalyptic number.

2783969646 is an abundant number, since it is smaller than the sum of its proper divisors (2856008754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2783969646 is a wasteful number, since it uses less digits than its factorization.

2783969646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548.

The product of its digits is 23514624, while the sum is 60.

The square root of 2783969646 is about 52763.3361909574. The cubic root of 2783969646 is about 1406.7648185020.

The spelling of 2783969646 in words is "two billion, seven hundred eighty-three million, nine hundred sixty-nine thousand, six hundred forty-six".