2197717992 has 96 divisors (see below), whose sum is σ = 6287954400. Its totient is φ = 691521408.

The previous prime is 2197717967. The next prime is 2197717997. The reversal of 2197717992 is 2997177912.

2197717992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2197717997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398083 + ... + 403565.

It is an arithmetic number, because the mean of its divisors is an integer number (65499525).

Almost surely, 2^2197717992 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 2197717992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3143977200).

2197717992 is an abundant number, since it is smaller than the sum of its proper divisors (4090236408).

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

2197717992 is a wasteful number, since it uses less digits than its factorization.

2197717992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807 (or 5800 counting only the distinct ones).

The product of its digits is 1000188, while the sum is 54.

The square root of 2197717992 is about 46879.8249996734. The cubic root of 2197717992 is about 1300.1416003549.

The spelling of 2197717992 in words is "two billion, one hundred ninety-seven million, seven hundred seventeen thousand, nine hundred ninety-two".