2047640868 has 288 divisors, whose sum is σ = 6819671040. Its totient is φ = 502951680.

The previous prime is 2047640851. The next prime is 2047640897. The reversal of 2047640868 is 8680467402.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4170103 + ... + 4170593.

Almost surely, 2^2047640868 is an apocalyptic number.

2047640868 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 2047640868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3409835520).

2047640868 is an abundant number, since it is smaller than the sum of its proper divisors (4772030172).

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

2047640868 is a wasteful number, since it uses less digits than its factorization.

2047640868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 2047640868 is about 45250.8659364658. The cubic root of 2047640868 is about 1269.8466072203.

The spelling of 2047640868 in words is "two billion, forty-seven million, six hundred forty thousand, eight hundred sixty-eight".