238623812191 has 2 divisors, whose sum is σ = 238623812192. Its totient is φ = 238623812190.

The previous prime is 238623812159. The next prime is 238623812213. The reversal of 238623812191 is 191218326832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238623812191 - 2⁵ = 238623812159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238623812131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119311906095 + 119311906096.

It is an arithmetic number, because the mean of its divisors is an integer number (119311906096).

Almost surely, 2^238623812191 is an apocalyptic number.

238623812191 is a deficient number, since it is larger than the sum of its proper divisors (1).

238623812191 is an equidigital number, since it uses as much as digits as its factorization.

238623812191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The spelling of 238623812191 in words is "two hundred thirty-eight billion, six hundred twenty-three million, eight hundred twelve thousand, one hundred ninety-one".