20016419 has 2 divisors, whose sum is σ = 20016420. Its totient is φ = 20016418.

The previous prime is 20016413. The next prime is 20016427. The reversal of 20016419 is 91461002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20016419 - 2¹⁶ = 19950883 is a prime.

It is a super-2 number, since 2×20016419² = 801314059167122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20016394 and 20016403.

It is not a weakly prime, because it can be changed into another prime (20016413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008209 + 10008210.

It is an arithmetic number, because the mean of its divisors is an integer number (10008210).

Almost surely, 2^20016419 is an apocalyptic number.

20016419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20016419 is an equidigital number, since it uses as much as digits as its factorization.

20016419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20016419 is about 4473.9712784058. The cubic root of 20016419 is about 271.5160213801.

The spelling of 20016419 in words is "twenty million, sixteen thousand, four hundred nineteen".