19627384349 has 2 divisors, whose sum is σ = 19627384350. Its totient is φ = 19627384348.

The previous prime is 19627384321. The next prime is 19627384433. The reversal of 19627384349 is 94348372691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19608400900 + 18983449 = 140030^2 + 4357^2 .

It is an emirp because it is prime and its reverse (94348372691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19627384349 - 2³² = 15332417053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19627384294 and 19627384303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19627384649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9813692174 + 9813692175.

It is an arithmetic number, because the mean of its divisors is an integer number (9813692175).

Almost surely, 2^19627384349 is an apocalyptic number.

It is an amenable number.

19627384349 is a deficient number, since it is larger than the sum of its proper divisors (1).

19627384349 is an equidigital number, since it uses as much as digits as its factorization.

19627384349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The spelling of 19627384349 in words is "nineteen billion, six hundred twenty-seven million, three hundred eighty-four thousand, three hundred forty-nine".