19894849660224 has 1680 divisors, whose sum is σ = 78003847950336. Its totient is φ = 4869530265600.

The previous prime is 19894849660211. The next prime is 19894849660229. The reversal of 19894849660224 is 42206694849891.

19894849660224 is a `hidden beast` number, since 1 + 9 + 8 + 9 + 4 + 8 + 4 + 9 + 6 + 602 + 2 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19894849660229) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 14992350249 + ... + 14992351575.

Almost surely, 2^{19894849660224} is an apocalyptic number.

19894849660224 is a gapful number since it is divisible by the number (14) 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 19894849660224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39001923975168).

19894849660224 is an abundant number, since it is smaller than the sum of its proper divisors (58108998290112).

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

19894849660224 is a wasteful number, since it uses less digits than its factorization.

19894849660224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 72.

The spelling of 19894849660224 in words is "nineteen trillion, eight hundred ninety-four billion, eight hundred forty-nine million, six hundred sixty thousand, two hundred twenty-four".