20164379 has 2 divisors, whose sum is σ = 20164380. Its totient is φ = 20164378.

The previous prime is 20164373. The next prime is 20164381. The reversal of 20164379 is 97346102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20164379 is a prime.

Together with 20164381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20164373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082189 + 10082190.

It is an arithmetic number, because the mean of its divisors is an integer number (10082190).

Almost surely, 2^20164379 is an apocalyptic number.

20164379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164379 is an equidigital number, since it uses as much as digits as its factorization.

20164379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20164379 is about 4490.4764780589. The cubic root of 20164379 is about 272.1833889783.

The spelling of 20164379 in words is "twenty million, one hundred sixty-four thousand, three hundred seventy-nine".