20819119 has 2 divisors, whose sum is σ = 20819120. Its totient is φ = 20819118.

The previous prime is 20819093. The next prime is 20819143. The reversal of 20819119 is 91191802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20819119 - 2⁵ = 20819087 is a prime.

It is a super-2 number, since 2×20819119² = 866871431872322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20819719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10409559 + 10409560.

It is an arithmetic number, because the mean of its divisors is an integer number (10409560).

Almost surely, 2^20819119 is an apocalyptic number.

20819119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20819119 is an equidigital number, since it uses as much as digits as its factorization.

20819119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 20819119 is about 4562.7972779864. The cubic root of 20819119 is about 275.0980102440.

The spelling of 20819119 in words is "twenty million, eight hundred nineteen thousand, one hundred nineteen".