138167219 has 2 divisors, whose sum is σ = 138167220. Its totient is φ = 138167218.

The previous prime is 138167189. The next prime is 138167243. The reversal of 138167219 is 912761831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138167219 - 2²⁰ = 137118643 is a prime.

It is a super-2 number, since 2×138167219² = 38180360812387922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138167119) 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, 69083609 + 69083610.

It is an arithmetic number, because the mean of its divisors is an integer number (69083610).

Almost surely, 2^138167219 is an apocalyptic number.

138167219 is a deficient number, since it is larger than the sum of its proper divisors (1).

138167219 is an equidigital number, since it uses as much as digits as its factorization.

138167219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 138167219 is about 11754.4552829980. The cubic root of 138167219 is about 516.9735678316.

The spelling of 138167219 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, two hundred nineteen".