38812219 has 2 divisors, whose sum is σ = 38812220. Its totient is φ = 38812218.

The previous prime is 38812181. The next prime is 38812243. The reversal of 38812219 is 91221883.

It is a strong prime.

It is an emirp because it is prime and its reverse (91221883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38812219 - 2¹³ = 38804027 is a prime.

It is a super-2 number, since 2×38812219² = 3012776687407922, which contains 22 as substring.

It is equal to p_2365648 and since 38812219 and 2365648 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (38812289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19406109 + 19406110.

It is an arithmetic number, because the mean of its divisors is an integer number (19406110).

Almost surely, 2^38812219 is an apocalyptic number.

38812219 is a deficient number, since it is larger than the sum of its proper divisors (1).

38812219 is an equidigital number, since it uses as much as digits as its factorization.

38812219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 38812219 is about 6229.9453448646. The cubic root of 38812219 is about 338.5759905672.

The spelling of 38812219 in words is "thirty-eight million, eight hundred twelve thousand, two hundred nineteen".