219039137 has 2 divisors, whose sum is σ = 219039138. Its totient is φ = 219039136.

The previous prime is 219039133. The next prime is 219039167. The reversal of 219039137 is 731930912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191988736 + 27050401 = 13856^2 + 5201^2 .

It is a cyclic number.

It is not a de Polignac number, because 219039137 - 2² = 219039133 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 219039097 and 219039106.

It is not a weakly prime, because it can be changed into another prime (219039133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109519568 + 109519569.

It is an arithmetic number, because the mean of its divisors is an integer number (109519569).

Almost surely, 2^219039137 is an apocalyptic number.

It is an amenable number.

219039137 is a deficient number, since it is larger than the sum of its proper divisors (1).

219039137 is an equidigital number, since it uses as much as digits as its factorization.

219039137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 219039137 is about 14799.9708445659. The cubic root of 219039137 is about 602.8009201387.

The spelling of 219039137 in words is "two hundred nineteen million, thirty-nine thousand, one hundred thirty-seven".