238808651 has 2 divisors, whose sum is σ = 238808652. Its totient is φ = 238808650.

The previous prime is 238808617. The next prime is 238808653. The reversal of 238808651 is 156808832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238808651 is a prime.

Together with 238808653, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 238808599 and 238808608.

It is not a weakly prime, because it can be changed into another prime (238808653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119404325 + 119404326.

It is an arithmetic number, because the mean of its divisors is an integer number (119404326).

Almost surely, 2^238808651 is an apocalyptic number.

238808651 is a deficient number, since it is larger than the sum of its proper divisors (1).

238808651 is an equidigital number, since it uses as much as digits as its factorization.

238808651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 238808651 is about 15453.4349256080. The cubic root of 238808651 is about 620.4165177262.

The spelling of 238808651 in words is "two hundred thirty-eight million, eight hundred eight thousand, six hundred fifty-one".