20413219 has 2 divisors, whose sum is σ = 20413220. Its totient is φ = 20413218.

The previous prime is 20413199. The next prime is 20413231. The reversal of 20413219 is 91231402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20413219 - 2¹³ = 20405027 is a prime.

It is a super-2 number, since 2×20413219² = 833399019883922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20413219.

It is not a weakly prime, because it can be changed into another prime (20413279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206609 + 10206610.

It is an arithmetic number, because the mean of its divisors is an integer number (10206610).

Almost surely, 2^20413219 is an apocalyptic number.

20413219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413219 is an equidigital number, since it uses as much as digits as its factorization.

20413219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20413219 is about 4518.0990471657. The cubic root of 20413219 is about 273.2984476926.

The spelling of 20413219 in words is "twenty million, four hundred thirteen thousand, two hundred nineteen".