19148314447 has 2 divisors, whose sum is σ = 19148314448. Its totient is φ = 19148314446.

The previous prime is 19148314411. The next prime is 19148314487. The reversal of 19148314447 is 74441384191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19148314447 - 2⁷ = 19148314319 is a prime.

It is a super-2 number, since 2×19148314447² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19148314397 and 19148314406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19148314487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574157223 + 9574157224.

It is an arithmetic number, because the mean of its divisors is an integer number (9574157224).

Almost surely, 2^19148314447 is an apocalyptic number.

19148314447 is a deficient number, since it is larger than the sum of its proper divisors (1).

19148314447 is an equidigital number, since it uses as much as digits as its factorization.

19148314447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The spelling of 19148314447 in words is "nineteen billion, one hundred forty-eight million, three hundred fourteen thousand, four hundred forty-seven".