2649128608 has 48 divisors (see below), whose sum is σ = 6013344960. Its totient is φ = 1125282816.

The previous prime is 2649128597. The next prime is 2649128617. The reversal of 2649128608 is 8068219462.

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, 27018 + ... + 77641.

It is an arithmetic number, because the mean of its divisors is an integer number (125278020).

Almost surely, 2^2649128608 is an apocalyptic number.

2649128608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2649128608 is an abundant number, since it is smaller than the sum of its proper divisors (3364216352).

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

2649128608 is a wasteful number, since it uses less digits than its factorization.

2649128608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104789 (or 104781 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 2649128608 is about 51469.6863017446. The cubic root of 2649128608 is about 1383.6758069887.

The spelling of 2649128608 in words is "two billion, six hundred forty-nine million, one hundred twenty-eight thousand, six hundred eight".