2219003681 has 4 divisors (see below), whose sum is σ = 2273125764. Its totient is φ = 2164881600.

The previous prime is 2219003639. The next prime is 2219003687. The reversal of 2219003681 is 1863009122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304153600 + 1914850081 = 17440^2 + 43759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2219003681 is a prime.

It is a super-2 number, since 2×2219003681² = 9847954672583099522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219003687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27060980 + ... + 27061061.

It is an arithmetic number, because the mean of its divisors is an integer number (568281441).

Almost surely, 2^2219003681 is an apocalyptic number.

It is an amenable number.

2219003681 is a deficient number, since it is larger than the sum of its proper divisors (54122083).

2219003681 is an equidigital number, since it uses as much as digits as its factorization.

2219003681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54122082.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2219003681 is about 47106.3019244772. The cubic root of 2219003681 is about 1304.3255678444.

The spelling of 2219003681 in words is "two billion, two hundred nineteen million, three thousand, six hundred eighty-one".