20816119 has 2 divisors, whose sum is σ = 20816120. Its totient is φ = 20816118.

The previous prime is 20816111. The next prime is 20816129. The reversal of 20816119 is 91161802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20816119 - 2³ = 20816111 is a prime.

It is a super-2 number, since 2×20816119² = 866621620444322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20816111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10408059 + 10408060.

It is an arithmetic number, because the mean of its divisors is an integer number (10408060).

Almost surely, 2^20816119 is an apocalyptic number.

20816119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20816119 is an equidigital number, since it uses as much as digits as its factorization.

20816119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 20816119 is about 4562.4685204393. The cubic root of 20816119 is about 275.0847958892.

The spelling of 20816119 in words is "twenty million, eight hundred sixteen thousand, one hundred nineteen".