2219730445 has 4 divisors (see below), whose sum is σ = 2663676540. Its totient is φ = 1775784352.

The previous prime is 2219730431. The next prime is 2219730463. The reversal of 2219730445 is 5440379122.

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 1116294921 + 1103435524 = 33411^2 + 33218^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219730445 - 2¹⁵ = 2219697677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221973040 + ... + 221973049.

It is an arithmetic number, because the mean of its divisors is an integer number (665919135).

Almost surely, 2^2219730445 is an apocalyptic number.

It is an amenable number.

2219730445 is a deficient number, since it is larger than the sum of its proper divisors (443946095).

2219730445 is an equidigital number, since it uses as much as digits as its factorization.

2219730445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443946094.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 2219730445 is about 47114.0153775923. The cubic root of 2219730445 is about 1304.4679490709.

It can be divided in two parts, 221 and 9730445, that added together give a triangular number (9730666 = T₄₄₁₁).

The spelling of 2219730445 in words is "two billion, two hundred nineteen million, seven hundred thirty thousand, four hundred forty-five".