193129427 has 2 divisors, whose sum is σ = 193129428. Its totient is φ = 193129426.

The previous prime is 193129421. The next prime is 193129481. The reversal of 193129427 is 724921391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193129427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (193129421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96564713 + 96564714.

It is an arithmetic number, because the mean of its divisors is an integer number (96564714).

Almost surely, 2^193129427 is an apocalyptic number.

193129427 is a deficient number, since it is larger than the sum of its proper divisors (1).

193129427 is an equidigital number, since it uses as much as digits as its factorization.

193129427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 193129427 is about 13897.1013884191. The cubic root of 193129427 is about 578.0288086837.

The spelling of 193129427 in words is "one hundred ninety-three million, one hundred twenty-nine thousand, four hundred twenty-seven".