19434671 has 2 divisors, whose sum is σ = 19434672. Its totient is φ = 19434670.

The previous prime is 19434643. The next prime is 19434677. The reversal of 19434671 is 17643491.

It is a strong prime.

It is an emirp because it is prime and its reverse (17643491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19434671 - 2¹⁰ = 19433647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19434677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9717335 + 9717336.

It is an arithmetic number, because the mean of its divisors is an integer number (9717336).

Almost surely, 2^19434671 is an apocalyptic number.

19434671 is a deficient number, since it is larger than the sum of its proper divisors (1).

19434671 is an equidigital number, since it uses as much as digits as its factorization.

19434671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 19434671 is about 4408.4771747169. The cubic root of 19434671 is about 268.8597132004.

The spelling of 19434671 in words is "nineteen million, four hundred thirty-four thousand, six hundred seventy-one".