19004998656 has 176 divisors, whose sum is σ = 58020823040. Its totient is φ = 5417902080.

The previous prime is 19004998633. The next prime is 19004998657. The reversal of 19004998656 is 65689940091.

It is a super-2 number, since 2×19004998656² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19004998596 and 19004998605.

It is not an unprimeable number, because it can be changed into a prime (19004998657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14858625 + ... + 14859903.

Almost surely, 2^19004998656 is an apocalyptic number.

19004998656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19004998656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29010411520).

19004998656 is an abundant number, since it is smaller than the sum of its proper divisors (39015824384).

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

19004998656 is a wasteful number, since it uses less digits than its factorization.

19004998656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 19004998656 in words is "nineteen billion, four million, nine hundred ninety-eight thousand, six hundred fifty-six".