2789818656 has 48 divisors (see below), whose sum is σ = 7326061344. Its totient is φ = 929585664.

The previous prime is 2789818639. The next prime is 2789818673. The reversal of 2789818656 is 6568189872.

It is an interprime number because it is at equal distance from previous prime (2789818639) and next prime (2789818673).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2789818656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409131 + ... + 415893.

It is an arithmetic number, because the mean of its divisors is an integer number (152626278).

Almost surely, 2^2789818656 is an apocalyptic number.

It is an amenable number.

2789818656 is an abundant number, since it is smaller than the sum of its proper divisors (4536242688).

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

2789818656 is a wasteful number, since it uses less digits than its factorization.

2789818656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073 (or 11065 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The square root of 2789818656 is about 52818.7339492343. The cubic root of 2789818656 is about 1407.7493150892.

The spelling of 2789818656 in words is "two billion, seven hundred eighty-nine million, eight hundred eighteen thousand, six hundred fifty-six".