238836881 has 2 divisors, whose sum is σ = 238836882. Its totient is φ = 238836880.

The previous prime is 238836863. The next prime is 238836901. The reversal of 238836881 is 188638832.

238836881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150307600 + 88529281 = 12260^2 + 9409^2 .

It is a cyclic number.

It is not a de Polignac number, because 238836881 - 2¹⁸ = 238574737 is a prime.

It is a super-2 number, since 2×238836881² = 114086111451616322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238836811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119418440 + 119418441.

It is an arithmetic number, because the mean of its divisors is an integer number (119418441).

Almost surely, 2^238836881 is an apocalyptic number.

It is an amenable number.

238836881 is a deficient number, since it is larger than the sum of its proper divisors (1).

238836881 is an equidigital number, since it uses as much as digits as its factorization.

238836881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 47.

The square root of 238836881 is about 15454.3482877797. The cubic root of 238836881 is about 620.4409636137.

The spelling of 238836881 in words is "two hundred thirty-eight million, eight hundred thirty-six thousand, eight hundred eighty-one".