2049649868 has 48 divisors (see below), whose sum is σ = 4253889024. Its totient is φ = 845873280.

The previous prime is 2049649801. The next prime is 2049649873. The reversal of 2049649868 is 8689469402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73496 + ... + 97472.

It is an arithmetic number, because the mean of its divisors is an integer number (88622688).

Almost surely, 2^2049649868 is an apocalyptic number.

2049649868 is a gapful number since it is divisible by the number (28) 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 2049649868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126944512).

2049649868 is an abundant number, since it is smaller than the sum of its proper divisors (2204239156).

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

2049649868 is a wasteful number, since it uses less digits than its factorization.

2049649868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24102 (or 24100 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The square root of 2049649868 is about 45273.0589644658. The cubic root of 2049649868 is about 1270.2617659527.

The spelling of 2049649868 in words is "two billion, forty-nine million, six hundred forty-nine thousand, eight hundred sixty-eight".