19449340337448 has 320 divisors, whose sum is σ = 63597569333760. Its totient is φ = 5438683419264.

The previous prime is 19449340337407. The next prime is 19449340337461. The reversal of 19449340337448 is 84473304394491.

It is a happy number.

19449340337448 is a `hidden beast` number, since 1 + 9 + 4 + 493 + 4 + 0 + 33 + 74 + 48 = 666.

It is a super-2 number, since 2×19449340337448² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 79 ways as a sum of consecutive naturals, for example, 40042815 + ... + 40525617.

It is an arithmetic number, because the mean of its divisors is an integer number (198742404168).

Almost surely, 2^{19449340337448} is an apocalyptic number.

19449340337448 is a gapful number since it is divisible by the number (18) 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 19449340337448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31798784666880).

19449340337448 is an abundant number, since it is smaller than the sum of its proper divisors (44148228996312).

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

19449340337448 is a wasteful number, since it uses less digits than its factorization.

19449340337448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483018 (or 483005 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 63.

The spelling of 19449340337448 in words is "nineteen trillion, four hundred forty-nine billion, three hundred forty million, three hundred thirty-seven thousand, four hundred forty-eight".