1971082568 has 64 divisors (see below), whose sum is σ = 4582085760. Its totient is φ = 774038016.

The previous prime is 1971082567. The next prime is 1971082601. The reversal of 1971082568 is 8652801791.

It is not an unprimeable number, because it can be changed into a prime (1971082567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89855 + ... + 109617.

It is an arithmetic number, because the mean of its divisors is an integer number (71595090).

Almost surely, 2^1971082568 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 1971082568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2291042880).

1971082568 is an abundant number, since it is smaller than the sum of its proper divisors (2611003192).

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

1971082568 is a wasteful number, since it uses less digits than its factorization.

1971082568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19926 (or 19922 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The square root of 1971082568 is about 44396.8756558387. The cubic root of 1971082568 is about 1253.8192665176.

The spelling of 1971082568 in words is "one billion, nine hundred seventy-one million, eighty-two thousand, five hundred sixty-eight".