19481942548 has 6 divisors (see below), whose sum is σ = 34093399466. Its totient is φ = 9740971272.

The previous prime is 19481942539. The next prime is 19481942549. The reversal of 19481942548 is 84524918491.

It can be written as a sum of positive squares in only one way, i.e., 19242683524 + 239259024 = 138718^2 + 15468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19481942549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2435242815 + ... + 2435242822.

Almost surely, 2^19481942548 is an apocalyptic number.

It is an amenable number.

19481942548 is a deficient number, since it is larger than the sum of its proper divisors (14611456918).

19481942548 is a wasteful number, since it uses less digits than its factorization.

19481942548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870485641 (or 4870485639 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 55.

The spelling of 19481942548 in words is "nineteen billion, four hundred eighty-one million, nine hundred forty-two thousand, five hundred forty-eight".