2047639968 has 144 divisors (see below), whose sum is σ = 6389222112. Its totient is φ = 616896000.

The previous prime is 2047639967. The next prime is 2047639969. The reversal of 2047639968 is 8699367402.

It is a happy number.

2047639968 is a `hidden beast` number, since 20 + 476 + 3 + 99 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (2047639967) and next prime (2047639969).

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (2047639961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571623 + ... + 575193.

It is an arithmetic number, because the mean of its divisors is an integer number (44369598).

Almost surely, 2^2047639968 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 2047639968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3194611056).

2047639968 is an abundant number, since it is smaller than the sum of its proper divisors (4341582144).

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

2047639968 is a wasteful number, since it uses less digits than its factorization.

2047639968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 2047639968 is about 45250.8559919036. The cubic root of 2047639968 is about 1269.8464211749.

The spelling of 2047639968 in words is "two billion, forty-seven million, six hundred thirty-nine thousand, nine hundred sixty-eight".