19517832950 has 48 divisors (see below), whose sum is σ = 45261103104. Its totient is φ = 6083479200.

The previous prime is 19517832949. The next prime is 19517832953. The reversal of 19517832950 is 5923871591.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19517832953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2530934 + ... + 2538633.

It is an arithmetic number, because the mean of its divisors is an integer number (942939648).

Almost surely, 2^19517832950 is an apocalyptic number.

19517832950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19517832950 is an abundant number, since it is smaller than the sum of its proper divisors (25743270154).

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

19517832950 is a wasteful number, since it uses less digits than its factorization.

19517832950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069597 (or 5069592 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 19517832950 in words is "nineteen billion, five hundred seventeen million, eight hundred thirty-two thousand, nine hundred fifty".