19808631248 has 40 divisors (see below), whose sum is σ = 43906475520. Its totient is φ = 8480799360.

The previous prime is 19808631223. The next prime is 19808631257. The reversal of 19808631248 is 84213680891.

It is a junction number, because it is equal to n+sod(n) for n = 19808631196 and 19808631205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21758 + ... + 200226.

It is an arithmetic number, because the mean of its divisors is an integer number (1097661888).

Almost surely, 2^19808631248 is an apocalyptic number.

It is an amenable number.

19808631248 is an abundant number, since it is smaller than the sum of its proper divisors (24097844272).

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

19808631248 is a wasteful number, since it uses less digits than its factorization.

19808631248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179475 (or 179469 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 19808631248 in words is "nineteen billion, eight hundred eight million, six hundred thirty-one thousand, two hundred forty-eight".