33138419 has 2 divisors, whose sum is σ = 33138420. Its totient is φ = 33138418.

The previous prime is 33138397. The next prime is 33138437. The reversal of 33138419 is 91483133.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33138419 - 2¹² = 33134323 is a prime.

It is a super-2 number, since 2×33138419² = 2196309627639122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33138019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16569209 + 16569210.

It is an arithmetic number, because the mean of its divisors is an integer number (16569210).

Almost surely, 2^33138419 is an apocalyptic number.

33138419 is a deficient number, since it is larger than the sum of its proper divisors (1).

33138419 is an equidigital number, since it uses as much as digits as its factorization.

33138419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 33138419 is about 5756.5978667960. The cubic root of 33138419 is about 321.2012757991.

The spelling of 33138419 in words is "thirty-three million, one hundred thirty-eight thousand, four hundred nineteen".