2219146864 has 20 divisors (see below), whose sum is σ = 4690469880. Its totient is φ = 1008703040.

The previous prime is 2219146843. The next prime is 2219146871. The reversal of 2219146864 is 4686419122.

It is a super-2 number, since 2×2219146864² = 9849225608002068992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2219146864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6304219 + ... + 6304570.

It is an arithmetic number, because the mean of its divisors is an integer number (234523494).

Almost surely, 2^2219146864 is an apocalyptic number.

It is an amenable number.

2219146864 is an abundant number, since it is smaller than the sum of its proper divisors (2471323016).

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

2219146864 is a wasteful number, since it uses less digits than its factorization.

2219146864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12608808 (or 12608802 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 2219146864 is about 47107.8216860003. The cubic root of 2219146864 is about 1304.3536214604.

The spelling of 2219146864 in words is "two billion, two hundred nineteen million, one hundred forty-six thousand, eight hundred sixty-four".