19009846450 has 72 divisors (see below), whose sum is σ = 41166569412. Its totient is φ = 6512042880.

The previous prime is 19009846441. The next prime is 19009846481. The reversal of 19009846450 is 5464890091.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10403388009 + 8606458441 = 101997^2 + 92771^2 .

It is a super-5 number, since 5×19009846450⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 19009846450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3655252 + ... + 3660448.

Almost surely, 2^19009846450 is an apocalyptic number.

19009846450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19009846450 is an abundant number, since it is smaller than the sum of its proper divisors (22156722962).

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

19009846450 is a wasteful number, since it uses less digits than its factorization.

19009846450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716 (or 6704 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 19009846450 in words is "nineteen billion, nine million, eight hundred forty-six thousand, four hundred fifty".