19872874350 has 144 divisors (see below), whose sum is σ = 61079840640. Its totient is φ = 4537857600.

The previous prime is 19872874327. The next prime is 19872874403. The reversal of 19872874350 is 5347827891.

It is a happy number.

19872874350 is a `hidden beast` number, since 1 + 9 + 8 + 7 + 287 + 4 + 350 = 666.

It is a super-2 number, since 2×19872874350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 3963345 + ... + 3968355.

It is an arithmetic number, because the mean of its divisors is an integer number (424165560).

Almost surely, 2^19872874350 is an apocalyptic number.

19872874350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19872874350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30539920320).

19872874350 is an abundant number, since it is smaller than the sum of its proper divisors (41206966290).

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

19872874350 is a wasteful number, since it uses less digits than its factorization.

19872874350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295 (or 6287 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 19872874350 in words is "nineteen billion, eight hundred seventy-two million, eight hundred seventy-four thousand, three hundred fifty".