2989808640 has 1056 divisors, whose sum is σ = 13733830656. Its totient is φ = 583925760.

The previous prime is 2989808639. The next prime is 2989808681. The reversal of 2989808640 is 468089892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96445425 + ... + 96445455.

Almost surely, 2^2989808640 is an apocalyptic number.

2989808640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2989808640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6866915328).

2989808640 is an abundant number, since it is smaller than the sum of its proper divisors (10744022016).

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

2989808640 is a wasteful number, since it uses less digits than its factorization.

2989808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 2989808640 is about 54679.1426414131. The cubic root of 2989808640 is about 1440.6145525034.

The spelling of 2989808640 in words is "two billion, nine hundred eighty-nine million, eight hundred eight thousand, six hundred forty".