83238191 has 2 divisors, whose sum is σ = 83238192. Its totient is φ = 83238190.

The previous prime is 83238167. The next prime is 83238209. The reversal of 83238191 is 19183238.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83238191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83238161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41619095 + 41619096.

It is an arithmetic number, because the mean of its divisors is an integer number (41619096).

Almost surely, 2^83238191 is an apocalyptic number.

83238191 is a deficient number, since it is larger than the sum of its proper divisors (1).

83238191 is an equidigital number, since it uses as much as digits as its factorization.

83238191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 83238191 is about 9123.4966432832. The cubic root of 83238191 is about 436.6239400988.

The spelling of 83238191 in words is "eighty-three million, two hundred thirty-eight thousand, one hundred ninety-one".