238470851 has 2 divisors, whose sum is σ = 238470852. Its totient is φ = 238470850.

The previous prime is 238470847. The next prime is 238470863. The reversal of 238470851 is 158074832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238470851 - 2² = 238470847 is a prime.

It is not a weakly prime, because it can be changed into another prime (238475851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119235425 + 119235426.

It is an arithmetic number, because the mean of its divisors is an integer number (119235426).

Almost surely, 2^238470851 is an apocalyptic number.

238470851 is a deficient number, since it is larger than the sum of its proper divisors (1).

238470851 is an equidigital number, since it uses as much as digits as its factorization.

238470851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 238470851 is about 15442.5014489234. The cubic root of 238470851 is about 620.1238488280.

The spelling of 238470851 in words is "two hundred thirty-eight million, four hundred seventy thousand, eight hundred fifty-one".