418427081 has 2 divisors, whose sum is σ = 418427082. Its totient is φ = 418427080.

The previous prime is 418427071. The next prime is 418427123. The reversal of 418427081 is 180724814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387735481 + 30691600 = 19691^2 + 5540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-418427081 is a prime.

It is a super-2 number, since 2×418427081² = 350162444228361122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (418427011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209213540 + 209213541.

It is an arithmetic number, because the mean of its divisors is an integer number (209213541).

Almost surely, 2^418427081 is an apocalyptic number.

It is an amenable number.

418427081 is a deficient number, since it is larger than the sum of its proper divisors (1).

418427081 is an equidigital number, since it uses as much as digits as its factorization.

418427081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 418427081 is about 20455.4902410086. The cubic root of 418427081 is about 747.9511970457.

The spelling of 418427081 in words is "four hundred eighteen million, four hundred twenty-seven thousand, eighty-one".