19074741509 has 2 divisors, whose sum is σ = 19074741510. Its totient is φ = 19074741508.

The previous prime is 19074741493. The next prime is 19074741577. The reversal of 19074741509 is 90514747091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19070781409 + 3960100 = 138097^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 19074741509 - 2⁴ = 19074741493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19074741209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9537370754 + 9537370755.

It is an arithmetic number, because the mean of its divisors is an integer number (9537370755).

Almost surely, 2^19074741509 is an apocalyptic number.

It is an amenable number.

19074741509 is a deficient number, since it is larger than the sum of its proper divisors (1).

19074741509 is an equidigital number, since it uses as much as digits as its factorization.

19074741509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 19074741509 in words is "nineteen billion, seventy-four million, seven hundred forty-one thousand, five hundred nine".