19475013739 has 2 divisors, whose sum is σ = 19475013740. Its totient is φ = 19475013738.

The previous prime is 19475013637. The next prime is 19475013763. The reversal of 19475013739 is 93731057491.

It is a strong prime.

It is an emirp because it is prime and its reverse (93731057491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19475013739 - 2⁹ = 19475013227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19475013692 and 19475013701.

It is not a weakly prime, because it can be changed into another prime (19475013839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9737506869 + 9737506870.

It is an arithmetic number, because the mean of its divisors is an integer number (9737506870).

Almost surely, 2^19475013739 is an apocalyptic number.

19475013739 is a deficient number, since it is larger than the sum of its proper divisors (1).

19475013739 is an equidigital number, since it uses as much as digits as its factorization.

19475013739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 19475013739 in words is "nineteen billion, four hundred seventy-five million, thirteen thousand, seven hundred thirty-nine".