19432013 has 2 divisors, whose sum is σ = 19432014. Its totient is φ = 19432012.

The previous prime is 19431989. The next prime is 19432031. The reversal of 19432013 is 31023491.

Together with next prime (19432031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17960644 + 1471369 = 4238^2 + 1213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19432013 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19432013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19432313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9716006 + 9716007.

It is an arithmetic number, because the mean of its divisors is an integer number (9716007).

Almost surely, 2^19432013 is an apocalyptic number.

It is an amenable number.

19432013 is a deficient number, since it is larger than the sum of its proper divisors (1).

19432013 is an equidigital number, since it uses as much as digits as its factorization.

19432013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 19432013 is about 4408.1756997652. The cubic root of 19432013 is about 268.8474556960.

The spelling of 19432013 in words is "nineteen million, four hundred thirty-two thousand, thirteen".