418475381 has 2 divisors, whose sum is σ = 418475382. Its totient is φ = 418475380.

The previous prime is 418475371. The next prime is 418475411. The reversal of 418475381 is 183574814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323100625 + 95374756 = 17975^2 + 9766^2 .

It is a cyclic number.

It is not a de Polignac number, because 418475381 - 2²⁶ = 351366517 is a prime.

It is a super-2 number, since 2×418475381² = 350243289006190322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418475341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209237690 + 209237691.

It is an arithmetic number, because the mean of its divisors is an integer number (209237691).

Almost surely, 2^418475381 is an apocalyptic number.

It is an amenable number.

418475381 is a deficient number, since it is larger than the sum of its proper divisors (1).

418475381 is an equidigital number, since it uses as much as digits as its factorization.

418475381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 418475381 is about 20456.6708190751. The cubic root of 418475381 is about 747.9799751805.

The spelling of 418475381 in words is "four hundred eighteen million, four hundred seventy-five thousand, three hundred eighty-one".