2219378688 has 108 divisors (see below), whose sum is σ = 6428498895. Its totient is φ = 737660928.

The previous prime is 2219378683. The next prime is 2219378779. The reversal of 2219378688 is 8868739122.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1109689344 + 1109689344 = 33312^2 + 33312^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33312.

It is not an unprimeable number, because it can be changed into a prime (2219378683) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6395731 + ... + 6396077.

Almost surely, 2^2219378688 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 2219378688

2219378688 is an abundant number, since it is smaller than the sum of its proper divisors (4209120207).

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

2219378688 is an frugal number, since it uses more digits than its factorization.

2219378688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 352 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 2219378688 is about 47110.2821897725. The cubic root of 2219378688 is about 1304.3990398071.

The spelling of 2219378688 in words is "two billion, two hundred nineteen million, three hundred seventy-eight thousand, six hundred eighty-eight".