193938163 has 2 divisors, whose sum is σ = 193938164. Its totient is φ = 193938162.

The previous prime is 193938161. The next prime is 193938181. The reversal of 193938163 is 361839391.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 193938163 - 2¹ = 193938161 is a prime.

It is a super-2 number, since 2×193938163² = 75224022135629138, which contains 22 as substring.

Together with 193938161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (193938161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96969081 + 96969082.

It is an arithmetic number, because the mean of its divisors is an integer number (96969082).

Almost surely, 2^193938163 is an apocalyptic number.

193938163 is a deficient number, since it is larger than the sum of its proper divisors (1).

193938163 is an equidigital number, since it uses as much as digits as its factorization.

193938163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The square root of 193938163 is about 13926.1682813328. The cubic root of 193938163 is about 578.8345234634.

It can be divided in two parts, 19393 and 8163, that added together give a square (27556 = 166²).

The spelling of 193938163 in words is "one hundred ninety-three million, nine hundred thirty-eight thousand, one hundred sixty-three".