20414819 has 2 divisors, whose sum is σ = 20414820. Its totient is φ = 20414818.

The previous prime is 20414803. The next prime is 20414857. The reversal of 20414819 is 91841402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20414819 - 2⁴ = 20414803 is a prime.

It is a super-2 number, since 2×20414819² = 833529669605522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20414791 and 20414800.

It is not a weakly prime, because it can be changed into another prime (20414879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207409 + 10207410.

It is an arithmetic number, because the mean of its divisors is an integer number (10207410).

Almost surely, 2^20414819 is an apocalyptic number.

20414819 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414819 is an equidigital number, since it uses as much as digits as its factorization.

20414819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 20414819 is about 4518.2761093143. The cubic root of 20414819 is about 273.3055879366.

The spelling of 20414819 in words is "twenty million, four hundred fourteen thousand, eight hundred nineteen".