19450225344 has 336 divisors, whose sum is σ = 59153633280. Its totient is φ = 5629747200.

The previous prime is 19450225343. The next prime is 19450225363. The reversal of 19450225344 is 44352205491.

It is a super-2 number, since 2×19450225344² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19450225343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81381577 + ... + 81381815.

It is an arithmetic number, because the mean of its divisors is an integer number (176052480).

Almost surely, 2^19450225344 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 19450225344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29576816640).

19450225344 is an abundant number, since it is smaller than the sum of its proper divisors (39703407936).

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

19450225344 is a wasteful number, since it uses less digits than its factorization.

19450225344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 19450225344 in words is "nineteen billion, four hundred fifty million, two hundred twenty-five thousand, three hundred forty-four".