219140641 has 2 divisors, whose sum is σ = 219140642. Its totient is φ = 219140640.

The previous prime is 219140629. The next prime is 219140651. The reversal of 219140641 is 146041912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216237025 + 2903616 = 14705^2 + 1704^2 .

It is a cyclic number.

It is not a de Polignac number, because 219140641 - 2¹⁷ = 219009569 is a prime.

It is not a weakly prime, because it can be changed into another prime (219140611) by changing a digit.

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 as a sum of consecutive naturals, namely, 109570320 + 109570321.

It is an arithmetic number, because the mean of its divisors is an integer number (109570321).

Almost surely, 2^219140641 is an apocalyptic number.

It is an amenable number.

219140641 is a deficient number, since it is larger than the sum of its proper divisors (1).

219140641 is an equidigital number, since it uses as much as digits as its factorization.

219140641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 219140641 is about 14803.3996433252. The cubic root of 219140641 is about 602.8940195675.

The spelling of 219140641 in words is "two hundred nineteen million, one hundred forty thousand, six hundred forty-one".