238516081 has 2 divisors, whose sum is σ = 238516082. Its totient is φ = 238516080.

The previous prime is 238516067. The next prime is 238516129. The reversal of 238516081 is 180615832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215619856 + 22896225 = 14684^2 + 4785^2 .

It is a cyclic number.

It is not a de Polignac number, because 238516081 - 2¹⁵ = 238483313 is a prime.

It is a super-2 number, since 2×238516081² = 113779841791197122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238516781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119258040 + 119258041.

It is an arithmetic number, because the mean of its divisors is an integer number (119258041).

Almost surely, 2^238516081 is an apocalyptic number.

It is an amenable number.

238516081 is a deficient number, since it is larger than the sum of its proper divisors (1).

238516081 is an equidigital number, since it uses as much as digits as its factorization.

238516081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 238516081 is about 15443.9658443031. The cubic root of 238516081 is about 620.1630519821.

The spelling of 238516081 in words is "two hundred thirty-eight million, five hundred sixteen thousand, eighty-one".