2789729646 has 64 divisors (see below), whose sum is σ = 6307027200. Its totient is φ = 814867200.

The previous prime is 2789729641. The next prime is 2789729647. The reversal of 2789729646 is 6469279872.

It is a self number, because there is not a number n which added to its sum of digits gives 2789729646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789729641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2160261 + ... + 2161551.

It is an arithmetic number, because the mean of its divisors is an integer number (98547300).

Almost surely, 2^2789729646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2789729646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3153513600).

2789729646 is an abundant number, since it is smaller than the sum of its proper divisors (3517297554).

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

2789729646 is a wasteful number, since it uses less digits than its factorization.

2789729646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465.

The product of its digits is 18289152, while the sum is 60.

The square root of 2789729646 is about 52817.8913437483. The cubic root of 2789729646 is about 1407.7343433755.

The spelling of 2789729646 in words is "two billion, seven hundred eighty-nine million, seven hundred twenty-nine thousand, six hundred forty-six".