19450427 has 2 divisors, whose sum is σ = 19450428. Its totient is φ = 19450426.

The previous prime is 19450421. The next prime is 19450429. The reversal of 19450427 is 72405491.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19450427 - 2⁴ = 19450411 is a prime.

It is a super-2 number, since 2×19450427² = 756638220964658, which contains 22 as substring.

Together with 19450429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 19450393 and 19450402.

It is not a weakly prime, because it can be changed into another prime (19450421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725213 + 9725214.

It is an arithmetic number, because the mean of its divisors is an integer number (9725214).

Almost surely, 2^19450427 is an apocalyptic number.

19450427 is a deficient number, since it is larger than the sum of its proper divisors (1).

19450427 is an equidigital number, since it uses as much as digits as its factorization.

19450427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 19450427 is about 4410.2638243080. The cubic root of 19450427 is about 268.9323498710.

The spelling of 19450427 in words is "nineteen million, four hundred fifty thousand, four hundred twenty-seven".