193985812 has 12 divisors (see below), whose sum is σ = 339971296. Its totient is φ = 96851160.

The previous prime is 193985809. The next prime is 193985849. The reversal of 193985812 is 218589391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32328 + ... + 37855.

Almost surely, 2^193985812 is an apocalyptic number.

It is an amenable number.

193985812 is a deficient number, since it is larger than the sum of its proper divisors (145985484).

193985812 is a wasteful number, since it uses less digits than its factorization.

193985812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70878 (or 70876 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

The square root of 193985812 is about 13927.8789483539. The cubic root of 193985812 is about 578.8819245306.

The spelling of 193985812 in words is "one hundred ninety-three million, nine hundred eighty-five thousand, eight hundred twelve".