238964161 has 2 divisors, whose sum is σ = 238964162. Its totient is φ = 238964160.

The previous prime is 238964153. The next prime is 238964183. The reversal of 238964161 is 161469832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203490225 + 35473936 = 14265^2 + 5956^2 .

It is a cyclic number.

It is not a de Polignac number, because 238964161 - 2³ = 238964153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238964191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119482080 + 119482081.

It is an arithmetic number, because the mean of its divisors is an integer number (119482081).

Almost surely, 2^238964161 is an apocalyptic number.

It is an amenable number.

238964161 is a deficient number, since it is larger than the sum of its proper divisors (1).

238964161 is an equidigital number, since it uses as much as digits as its factorization.

238964161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 238964161 is about 15458.4656741864. The cubic root of 238964161 is about 620.5511583508.

The spelling of 238964161 in words is "two hundred thirty-eight million, nine hundred sixty-four thousand, one hundred sixty-one".