193994129 has 8 divisors (see below), whose sum is σ = 221832000. Its totient is φ = 166187376.

The previous prime is 193994117. The next prime is 193994147. The reversal of 193994129 is 921499391.

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 193994129 - 2²⁴ = 177216913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193994189) 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, 7622 + ... + 21120.

It is an arithmetic number, because the mean of its divisors is an integer number (27729000).

Almost surely, 2^193994129 is an apocalyptic number.

It is an amenable number.

193994129 is a deficient number, since it is larger than the sum of its proper divisors (27837871).

193994129 is a wasteful number, since it uses less digits than its factorization.

193994129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559.

The product of its digits is 157464, while the sum is 47.

The square root of 193994129 is about 13928.1775189721. The cubic root of 193994129 is about 578.8901974590.

The spelling of 193994129 in words is "one hundred ninety-three million, nine hundred ninety-four thousand, one hundred twenty-nine".