2609881880 has 32 divisors (see below), whose sum is σ = 5942991600. Its totient is φ = 1031373696.

The previous prime is 2609881831. The next prime is 2609881891. The reversal of 2609881880 is 881889062.

2609881880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2609881880³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 389735 + ... + 396374.

Almost surely, 2^2609881880 is an apocalyptic number.

2609881880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2609881880 is an abundant number, since it is smaller than the sum of its proper divisors (3333109720).

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

2609881880 is a wasteful number, since it uses less digits than its factorization.

2609881880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786203 (or 786199 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 50.

The square root of 2609881880 is about 51087.0030438271. The cubic root of 2609881880 is about 1376.8087499865.

The spelling of 2609881880 in words is "two billion, six hundred nine million, eight hundred eighty-one thousand, eight hundred eighty".