19999275930 has 96 divisors (see below), whose sum is σ = 54803024640. Its totient is φ = 5046157440.

The previous prime is 19999275917. The next prime is 19999275931. The reversal of 19999275930 is 3957299991.

19999275930 is a `hidden beast` number, since 19 + 9 + 9 + 9 + 27 + 593 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (19999275931) 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, 1451775 + ... + 1465485.

It is an arithmetic number, because the mean of its divisors is an integer number (570864840).

Almost surely, 2^19999275930 is an apocalyptic number.

19999275930 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 19999275930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27401512320).

19999275930 is an abundant number, since it is smaller than the sum of its proper divisors (34803748710).

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

19999275930 is a wasteful number, since it uses less digits than its factorization.

19999275930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14596 (or 14593 counting only the distinct ones).

The product of its (nonzero) digits is 12400290, while the sum is 63.

The spelling of 19999275930 in words is "nineteen billion, nine hundred ninety-nine million, two hundred seventy-five thousand, nine hundred thirty".