19816236048 has 320 divisors, whose sum is σ = 65678653440. Its totient is φ = 5011808256.

The previous prime is 19816236019. The next prime is 19816236059. The reversal of 19816236048 is 84063261891.

It is a super-2 number, since 2×19816236048² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 19816235988 and 19816236006.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 17038315 + ... + 17039477.

It is an arithmetic number, because the mean of its divisors is an integer number (205245792).

Almost surely, 2^19816236048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19816236048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32839326720).

19816236048 is an abundant number, since it is smaller than the sum of its proper divisors (45862417392).

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

19816236048 is a wasteful number, since it uses less digits than its factorization.

19816236048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 19816236048 in words is "nineteen billion, eight hundred sixteen million, two hundred thirty-six thousand, forty-eight".