193104091 has 4 divisors (see below), whose sum is σ = 194978992. Its totient is φ = 191229192.

The previous prime is 193104083. The next prime is 193104097. The reversal of 193104091 is 190401391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190401391 = 5171 ⋅36821.

It is a cyclic number.

It is not a de Polignac number, because 193104091 - 2³ = 193104083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193104097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937296 + ... + 937501.

It is an arithmetic number, because the mean of its divisors is an integer number (48744748).

Almost surely, 2^193104091 is an apocalyptic number.

193104091 is a deficient number, since it is larger than the sum of its proper divisors (1874901).

193104091 is a wasteful number, since it uses less digits than its factorization.

193104091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874900.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 193104091 is about 13896.1898015247. The cubic root of 193104091 is about 578.0035310265.

The spelling of 193104091 in words is "one hundred ninety-three million, one hundred four thousand, ninety-one".