238878361 has 2 divisors, whose sum is σ = 238878362. Its totient is φ = 238878360.

The previous prime is 238878331. The next prime is 238878389. The reversal of 238878361 is 163878832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125328025 + 113550336 = 11195^2 + 10656^2 .

It is a cyclic number.

It is not a de Polignac number, because 238878361 - 2⁵ = 238878329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238878331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119439180 + 119439181.

It is an arithmetic number, because the mean of its divisors is an integer number (119439181).

Almost surely, 2^238878361 is an apocalyptic number.

It is an amenable number.

238878361 is a deficient number, since it is larger than the sum of its proper divisors (1).

238878361 is an equidigital number, since it uses as much as digits as its factorization.

238878361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 238878361 is about 15455.6902466373. The cubic root of 238878361 is about 620.4768799000.

The spelling of 238878361 in words is "two hundred thirty-eight million, eight hundred seventy-eight thousand, three hundred sixty-one".