19414709 has 2 divisors, whose sum is σ = 19414710. Its totient is φ = 19414708.

The previous prime is 19414693. The next prime is 19414721. The reversal of 19414709 is 90741491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17098225 + 2316484 = 4135^2 + 1522^2 .

It is an emirp because it is prime and its reverse (90741491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19414709 - 2⁴ = 19414693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19414739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9707354 + 9707355.

It is an arithmetic number, because the mean of its divisors is an integer number (9707355).

Almost surely, 2^19414709 is an apocalyptic number.

It is an amenable number.

19414709 is a deficient number, since it is larger than the sum of its proper divisors (1).

19414709 is an equidigital number, since it uses as much as digits as its factorization.

19414709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 19414709 is about 4406.2125459401. The cubic root of 19414709 is about 268.7676300675.

The spelling of 19414709 in words is "nineteen million, four hundred fourteen thousand, seven hundred nine".