2219651660 has 24 divisors (see below), whose sum is σ = 4749219216. Its totient is φ = 871108160.

The previous prime is 2219651641. The next prime is 2219651671. The reversal of 2219651660 is 661569122.

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, 1045946 + ... + 1048065.

It is an arithmetic number, because the mean of its divisors is an integer number (197884134).

Almost surely, 2^2219651660 is an apocalyptic number.

2219651660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2219651660 is an abundant number, since it is smaller than the sum of its proper divisors (2529567556).

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

2219651660 is a wasteful number, since it uses less digits than its factorization.

2219651660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094073 (or 2094071 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2219651660 is about 47113.1792601603. The cubic root of 2219651660 is about 1304.4525157070.

The spelling of 2219651660 in words is "two billion, two hundred nineteen million, six hundred fifty-one thousand, six hundred sixty".