1445213219 has 2 divisors, whose sum is σ = 1445213220. Its totient is φ = 1445213218.

The previous prime is 1445213191. The next prime is 1445213227. The reversal of 1445213219 is 9123125441.

It is a strong prime.

It is an emirp because it is prime and its reverse (9123125441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445213219 is a prime.

It is a super-2 number, since 2×1445213219² = 4177282496744683922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1445213279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722606609 + 722606610.

It is an arithmetic number, because the mean of its divisors is an integer number (722606610).

Almost surely, 2^1445213219 is an apocalyptic number.

1445213219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445213219 is an equidigital number, since it uses as much as digits as its factorization.

1445213219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1445213219 is about 38015.9600562711. The cubic root of 1445213219 is about 1130.6043231601.

The spelling of 1445213219 in words is "one billion, four hundred forty-five million, two hundred thirteen thousand, two hundred nineteen".