19430107 has 2 divisors, whose sum is σ = 19430108. Its totient is φ = 19430106.

The previous prime is 19430083. The next prime is 19430119. The reversal of 19430107 is 70103491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19430107 is a prime.

It is not a weakly prime, because it can be changed into another prime (19430197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9715053 + 9715054.

It is an arithmetic number, because the mean of its divisors is an integer number (9715054).

Almost surely, 2^19430107 is an apocalyptic number.

19430107 is a deficient number, since it is larger than the sum of its proper divisors (1).

19430107 is an equidigital number, since it uses as much as digits as its factorization.

19430107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 19430107 is about 4407.9595052586. The cubic root of 19430107 is about 268.8386653903.

Adding to 19430107 its reverse (70103491), we get a palindrome (89533598).

The spelling of 19430107 in words is "nineteen million, four hundred thirty thousand, one hundred seven".