19930203 has 12 divisors (see below), whose sum is σ = 28839408. Its totient is φ = 13263120.

The previous prime is 19930201. The next prime is 19930217. The reversal of 19930203 is 30203991.

It is not a de Polignac number, because 19930203 - 2¹ = 19930201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19930201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4458 + ... + 7728.

It is an arithmetic number, because the mean of its divisors is an integer number (2403284).

Almost surely, 2^19930203 is an apocalyptic number.

19930203 is a deficient number, since it is larger than the sum of its proper divisors (8909205).

19930203 is a wasteful number, since it uses less digits than its factorization.

19930203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954 (or 3951 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 19930203 is about 4464.3255929647. The cubic root of 19930203 is about 271.1256299457.

The spelling of 19930203 in words is "nineteen million, nine hundred thirty thousand, two hundred three".