19891503048 has 16 divisors (see below), whose sum is σ = 49728757680. Its totient is φ = 6630501008.

The previous prime is 19891503041. The next prime is 19891503053. The reversal of 19891503048 is 84030519891.

It is a junction number, because it is equal to n+sod(n) for n = 19891502988 and 19891503006.

It is not an unprimeable number, because it can be changed into a prime (19891503041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414406290 + ... + 414406337.

It is an arithmetic number, because the mean of its divisors is an integer number (3108047355).

Almost surely, 2^19891503048 is an apocalyptic number.

It is an amenable number.

19891503048 is an abundant number, since it is smaller than the sum of its proper divisors (29837254632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19891503048 is a wasteful number, since it uses less digits than its factorization.

19891503048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828812636 (or 828812632 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 19891503048 in words is "nineteen billion, eight hundred ninety-one million, five hundred three thousand, forty-eight".