19394027 has 2 divisors, whose sum is σ = 19394028. Its totient is φ = 19394026.

The previous prime is 19393981. The next prime is 19394047. The reversal of 19394027 is 72049391.

It is a strong prime.

It is an emirp because it is prime and its reverse (72049391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19394027 - 2⁸ = 19393771 is a prime.

It is a super-2 number, since 2×19394027² = 752256566553458, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19394047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9697013 + 9697014.

It is an arithmetic number, because the mean of its divisors is an integer number (9697014).

Almost surely, 2^19394027 is an apocalyptic number.

19394027 is a deficient number, since it is larger than the sum of its proper divisors (1).

19394027 is an equidigital number, since it uses as much as digits as its factorization.

19394027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 19394027 is about 4403.8650070137. The cubic root of 19394027 is about 268.6721590319.

The spelling of 19394027 in words is "nineteen million, three hundred ninety-four thousand, twenty-seven".