38138519 has 2 divisors, whose sum is σ = 38138520. Its totient is φ = 38138518.

The previous prime is 38138467. The next prime is 38138521. The reversal of 38138519 is 91583183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38138519 - 2¹² = 38134423 is a prime.

It is a super-2 number, since 2×38138519² = 2909093263026722, which contains 22 as substring.

Together with 38138521, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38138539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19069259 + 19069260.

It is an arithmetic number, because the mean of its divisors is an integer number (19069260).

Almost surely, 2^38138519 is an apocalyptic number.

38138519 is a deficient number, since it is larger than the sum of its proper divisors (1).

38138519 is an equidigital number, since it uses as much as digits as its factorization.

38138519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 38138519 is about 6175.6391572047. The cubic root of 38138519 is about 336.6055518688.

The spelling of 38138519 in words is "thirty-eight million, one hundred thirty-eight thousand, five hundred nineteen".