19794409950 has 192 divisors, whose sum is σ = 60264000000. Its totient is φ = 4286096640.

The previous prime is 19794409939. The next prime is 19794409951. The reversal of 19794409950 is 5990449791.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19794409951) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 967426 + ... + 987674.

It is an arithmetic number, because the mean of its divisors is an integer number (313875000).

Almost surely, 2^19794409950 is an apocalyptic number.

19794409950 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 19794409950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30132000000).

19794409950 is an abundant number, since it is smaller than the sum of its proper divisors (40469590050).

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

19794409950 is a wasteful number, since it uses less digits than its factorization.

19794409950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20304 (or 20285 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 57.

The spelling of 19794409950 in words is "nineteen billion, seven hundred ninety-four million, four hundred nine thousand, nine hundred fifty".