219039641 has 2 divisors, whose sum is σ = 219039642. Its totient is φ = 219039640.

The previous prime is 219039631. The next prime is 219039659. The reversal of 219039641 is 146930912.

219039641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116726416 + 102313225 = 10804^2 + 10115^2 .

It is a cyclic number.

It is not a de Polignac number, because 219039641 - 2²⁶ = 151930777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (219039631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109519820 + 109519821.

It is an arithmetic number, because the mean of its divisors is an integer number (109519821).

Almost surely, 2^219039641 is an apocalyptic number.

It is an amenable number.

219039641 is a deficient number, since it is larger than the sum of its proper divisors (1).

219039641 is an equidigital number, since it uses as much as digits as its factorization.

219039641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 219039641 is about 14799.9878716167. The cubic root of 219039641 is about 602.8013824784.

The spelling of 219039641 in words is "two hundred nineteen million, thirty-nine thousand, six hundred forty-one".