2909011968 has 190 divisors, whose sum is σ = 8754544326. Its totient is φ = 962592768.

The previous prime is 2909011957. The next prime is 2909011991. The reversal of 2909011968 is 8691109092.

It can be written as a sum of positive squares in only one way, i.e., 2569273344 + 339738624 = 50688^2 + 18432^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21233596 + ... + 21233732.

Almost surely, 2^2909011968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2909011968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4377272163).

2909011968 is an abundant number, since it is smaller than the sum of its proper divisors (5845532358).

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

2909011968 is an frugal number, since it uses more digits than its factorization.

2909011968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 2909011968 is about 53935.2571885960. The cubic root of 2909011968 is about 1427.5187983902.

The spelling of 2909011968 in words is "two billion, nine hundred nine million, eleven thousand, nine hundred sixty-eight".