19803950 has 12 divisors (see below), whose sum is σ = 36835440. Its totient is φ = 7921560.

The previous prime is 19803937. The next prime is 19803983. The reversal of 19803950 is 5930891.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19803950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197990 + ... + 198089.

It is an arithmetic number, because the mean of its divisors is an integer number (3069620).

Almost surely, 2^19803950 is an apocalyptic number.

19803950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19803950 is a deficient number, since it is larger than the sum of its proper divisors (17031490).

19803950 is a wasteful number, since it uses less digits than its factorization.

19803950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396091 (or 396086 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 19803950 is about 4450.1629183660. The cubic root of 19803950 is about 270.5519117538.

The spelling of 19803950 in words is "nineteen million, eight hundred three thousand, nine hundred fifty".