193156013 has 2 divisors, whose sum is σ = 193156014. Its totient is φ = 193156012.

The previous prime is 193155959. The next prime is 193156081. The reversal of 193156013 is 310651391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169468324 + 23687689 = 13018^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 193156013 - 2⁸ = 193155757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193153013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96578006 + 96578007.

It is an arithmetic number, because the mean of its divisors is an integer number (96578007).

Almost surely, 2^193156013 is an apocalyptic number.

It is an amenable number.

193156013 is a deficient number, since it is larger than the sum of its proper divisors (1).

193156013 is an equidigital number, since it uses as much as digits as its factorization.

193156013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 193156013 is about 13898.0578859062. The cubic root of 193156013 is about 578.0553310855.

The spelling of 193156013 in words is "one hundred ninety-three million, one hundred fifty-six thousand, thirteen".