19748848529 has 2 divisors, whose sum is σ = 19748848530. Its totient is φ = 19748848528.

The previous prime is 19748848519. The next prime is 19748848657. The reversal of 19748848529 is 92584884791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16677139600 + 3071708929 = 129140^2 + 55423^2 .

It is a cyclic number.

It is not a de Polignac number, because 19748848529 - 2¹² = 19748844433 is a prime.

It is not a weakly prime, because it can be changed into another prime (19748848519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9874424264 + 9874424265.

It is an arithmetic number, because the mean of its divisors is an integer number (9874424265).

Almost surely, 2^19748848529 is an apocalyptic number.

It is an amenable number.

19748848529 is a deficient number, since it is larger than the sum of its proper divisors (1).

19748848529 is an equidigital number, since it uses as much as digits as its factorization.

19748848529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 65.

The spelling of 19748848529 in words is "nineteen billion, seven hundred forty-eight million, eight hundred forty-eight thousand, five hundred twenty-nine".