418368481 has 2 divisors, whose sum is σ = 418368482. Its totient is φ = 418368480.

The previous prime is 418368451. The next prime is 418368499. The reversal of 418368481 is 184863814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305690256 + 112678225 = 17484^2 + 10615^2 .

It is a cyclic number.

It is not a de Polignac number, because 418368481 - 2¹³ = 418360289 is a prime.

It is a super-2 number, since 2×418368481² = 350064371788494722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (418368451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209184240 + 209184241.

It is an arithmetic number, because the mean of its divisors is an integer number (209184241).

Almost surely, 2^418368481 is an apocalyptic number.

It is an amenable number.

418368481 is a deficient number, since it is larger than the sum of its proper divisors (1).

418368481 is an equidigital number, since it uses as much as digits as its factorization.

418368481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 43.

The square root of 418368481 is about 20454.0578125711. The cubic root of 418368481 is about 747.9162789852.

The spelling of 418368481 in words is "four hundred eighteen million, three hundred sixty-eight thousand, four hundred eighty-one".