2219307390756 has 45 divisors (see below), whose sum is σ = 5801778002251. Its totient is φ = 739760191848.

The previous prime is 2219307390749. The next prime is 2219307390757. The reversal of 2219307390756 is 6570937039122.

The square root of 2219307390756 is 1489734.

It is a perfect power (a square), and thus also a powerful number.

2219307390756 is a `hidden beast` number, since 2 + 219 + 30 + 7 + 390 + 7 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219307390757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 26773831 + ... + 26856593.

Almost surely, 2^{2219307390756} is an apocalyptic number.

2219307390756 is the 1489734-th square number.

It is an amenable number.

2219307390756 is an abundant number, since it is smaller than the sum of its proper divisors (3582470611495).

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

2219307390756 is an frugal number, since it uses more digits than its factorization.

2219307390756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165542 (or 82768 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 2219307390756 in words is "two trillion, two hundred nineteen billion, three hundred seven million, three hundred ninety thousand, seven hundred fifty-six".