20013179 has 2 divisors, whose sum is σ = 20013180. Its totient is φ = 20013178.

The previous prime is 20013127. The next prime is 20013193. The reversal of 20013179 is 97131002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013179 - 2¹⁶ = 19947643 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20013109) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006589 + 10006590.

It is an arithmetic number, because the mean of its divisors is an integer number (10006590).

Almost surely, 2^20013179 is an apocalyptic number.

20013179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013179 is an equidigital number, since it uses as much as digits as its factorization.

20013179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 20013179 is about 4473.6091693397. The cubic root of 20013179 is about 271.5013707512.

The spelling of 20013179 in words is "twenty million, thirteen thousand, one hundred seventy-nine".