238165243 has 2 divisors, whose sum is σ = 238165244. Its totient is φ = 238165242.

The previous prime is 238165181. The next prime is 238165297. The reversal of 238165243 is 342561832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238165243 - 2²⁵ = 204610811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238165199 and 238165208.

It is not a weakly prime, because it can be changed into another prime (238160243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119082621 + 119082622.

It is an arithmetic number, because the mean of its divisors is an integer number (119082622).

Almost surely, 2^238165243 is an apocalyptic number.

238165243 is a deficient number, since it is larger than the sum of its proper divisors (1).

238165243 is an equidigital number, since it uses as much as digits as its factorization.

238165243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 238165243 is about 15432.6032476702. The cubic root of 238165243 is about 619.8588327579.

The spelling of 238165243 in words is "two hundred thirty-eight million, one hundred sixty-five thousand, two hundred forty-three".