238533481 has 2 divisors, whose sum is σ = 238533482. Its totient is φ = 238533480.

The previous prime is 238533461. The next prime is 238533509. The reversal of 238533481 is 184335832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172029456 + 66504025 = 13116^2 + 8155^2 .

It is a cyclic number.

It is not a de Polignac number, because 238533481 - 2¹³ = 238525289 is a prime.

It is a super-2 number, since 2×238533481² = 113796443115954722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 238533481.

It is not a weakly prime, because it can be changed into another prime (238533461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119266740 + 119266741.

It is an arithmetic number, because the mean of its divisors is an integer number (119266741).

Almost surely, 2^238533481 is an apocalyptic number.

It is an amenable number.

238533481 is a deficient number, since it is larger than the sum of its proper divisors (1).

238533481 is an equidigital number, since it uses as much as digits as its factorization.

238533481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 238533481 is about 15444.5291608388. The cubic root of 238533481 is about 620.1781321320.

The spelling of 238533481 in words is "two hundred thirty-eight million, five hundred thirty-three thousand, four hundred eighty-one".