193909842 has 32 divisors (see below), whose sum is σ = 492470400. Its totient is φ = 55402704.

The previous prime is 193909811. The next prime is 193909843. The reversal of 193909842 is 248909391.

193909842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (193909843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256117 + ... + 256872.

It is an arithmetic number, because the mean of its divisors is an integer number (15389700).

Almost surely, 2^193909842 is an apocalyptic number.

193909842 is an abundant number, since it is smaller than the sum of its proper divisors (298560558).

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

193909842 is a wasteful number, since it uses less digits than its factorization.

193909842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513007 (or 513001 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 193909842 is about 13925.1514174891. The cubic root of 193909842 is about 578.8063461476.

The spelling of 193909842 in words is "one hundred ninety-three million, nine hundred nine thousand, eight hundred forty-two".