19948414513 has 4 divisors (see below), whose sum is σ = 19948833828. Its totient is φ = 19947995200.

The previous prime is 19948414501. The next prime is 19948414517. The reversal of 19948414513 is 31541484991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31541484991 = 25913 ⋅1217207.

It can be written as a sum of positive squares in 2 ways, for example, as 4544377744 + 15404036769 = 67412^2 + 124113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19948414513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19948414517) 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 in 3 ways as a sum of consecutive naturals, for example, 127588 + ... + 237013.

It is an arithmetic number, because the mean of its divisors is an integer number (4987208457).

Almost surely, 2^19948414513 is an apocalyptic number.

It is an amenable number.

19948414513 is a deficient number, since it is larger than the sum of its proper divisors (419315).

19948414513 is an equidigital number, since it uses as much as digits as its factorization.

19948414513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419314.

The product of its digits is 622080, while the sum is 49.

The spelling of 19948414513 in words is "nineteen billion, nine hundred forty-eight million, four hundred fourteen thousand, five hundred thirteen".