196381993 has 8 divisors (see below), whose sum is σ = 204064256. Its totient is φ = 188784000.

The previous prime is 196381987. The next prime is 196382009. The reversal of 196381993 is 399183691.

196381993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196381993 - 2⁵ = 196381961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196381973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16296 + ... + 25657.

It is an arithmetic number, because the mean of its divisors is an integer number (25508032).

Almost surely, 2^196381993 is an apocalyptic number.

It is an amenable number.

196381993 is a deficient number, since it is larger than the sum of its proper divisors (7682263).

196381993 is a wasteful number, since it uses less digits than its factorization.

196381993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42135.

The product of its digits is 314928, while the sum is 49.

The square root of 196381993 is about 14013.6359664435. The cubic root of 196381993 is about 581.2556950458.

The spelling of 196381993 in words is "one hundred ninety-six million, three hundred eighty-one thousand, nine hundred ninety-three".