418332641 has 2 divisors, whose sum is σ = 418332642. Its totient is φ = 418332640.

The previous prime is 418332637. The next prime is 418332643. The reversal of 418332641 is 146233814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241336225 + 176996416 = 15535^2 + 13304^2 .

It is a cyclic number.

It is not a de Polignac number, because 418332641 - 2² = 418332637 is a prime.

Together with 418332643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 418332598 and 418332607.

It is not a weakly prime, because it can be changed into another prime (418332643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209166320 + 209166321.

It is an arithmetic number, because the mean of its divisors is an integer number (209166321).

Almost surely, 2^418332641 is an apocalyptic number.

It is an amenable number.

418332641 is a deficient number, since it is larger than the sum of its proper divisors (1).

418332641 is an equidigital number, since it uses as much as digits as its factorization.

418332641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 418332641 is about 20453.1816840315. The cubic root of 418332641 is about 747.8949213494.

The spelling of 418332641 in words is "four hundred eighteen million, three hundred thirty-two thousand, six hundred forty-one".