2197940860 has 24 divisors (see below), whose sum is σ = 4618373760. Its totient is φ = 878662464.

The previous prime is 2197940831. The next prime is 2197940873. The reversal of 2197940860 is 680497912.

It is a self number, because there is not a number n which added to its sum of digits gives 2197940860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3942 + ... + 66418.

It is an arithmetic number, because the mean of its divisors is an integer number (192432240).

Almost surely, 2^2197940860 is an apocalyptic number.

2197940860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2197940860 is an abundant number, since it is smaller than the sum of its proper divisors (2420432900).

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

2197940860 is a wasteful number, since it uses less digits than its factorization.

2197940860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64245 (or 64243 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2197940860 is about 46882.2019534066. The cubic root of 2197940860 is about 1300.1855474803.

The spelling of 2197940860 in words is "two billion, one hundred ninety-seven million, nine hundred forty thousand, eight hundred sixty".