2216344387 has 2 divisors, whose sum is σ = 2216344388. Its totient is φ = 2216344386.

The previous prime is 2216344379. The next prime is 2216344397. The reversal of 2216344387 is 7834436122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216344387 - 2³ = 2216344379 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216344397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108172193 + 1108172194.

It is an arithmetic number, because the mean of its divisors is an integer number (1108172194).

Almost surely, 2^2216344387 is an apocalyptic number.

2216344387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216344387 is an equidigital number, since it uses as much as digits as its factorization.

2216344387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 40.

The square root of 2216344387 is about 47078.0669420485. The cubic root of 2216344387 is about 1303.8043171416.

The spelling of 2216344387 in words is "two billion, two hundred sixteen million, three hundred forty-four thousand, three hundred eighty-seven".