219519941 has 2 divisors, whose sum is σ = 219519942. Its totient is φ = 219519940.

The previous prime is 219519931. The next prime is 219519961. The reversal of 219519941 is 149915912.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112996900 + 106523041 = 10630^2 + 10321^2 .

It is a cyclic number.

It is not a de Polignac number, because 219519941 - 2¹⁰ = 219518917 is a prime.

It is a Chen prime.

It is equal to p_12097598 and since 219519941 and 12097598 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219519931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109759970 + 109759971.

It is an arithmetic number, because the mean of its divisors is an integer number (109759971).

Almost surely, 2^219519941 is an apocalyptic number.

It is an amenable number.

219519941 is a deficient number, since it is larger than the sum of its proper divisors (1).

219519941 is an equidigital number, since it uses as much as digits as its factorization.

219519941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 41.

The square root of 219519941 is about 14816.2053508987. The cubic root of 219519941 is about 603.2416591649.

The spelling of 219519941 in words is "two hundred nineteen million, five hundred nineteen thousand, nine hundred forty-one".