438210900641 has 2 divisors, whose sum is σ = 438210900642. Its totient is φ = 438210900640.

The previous prime is 438210900613. The next prime is 438210900661. The reversal of 438210900641 is 146009012834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438210900625 + 16 = 661975^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 438210900641 - 2²² = 438206706337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438210900595 and 438210900604.

It is not a weakly prime, because it can be changed into another prime (438210900661) 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, 219105450320 + 219105450321.

It is an arithmetic number, because the mean of its divisors is an integer number (219105450321).

Almost surely, 2^438210900641 is an apocalyptic number.

It is an amenable number.

438210900641 is a deficient number, since it is larger than the sum of its proper divisors (1).

438210900641 is an equidigital number, since it uses as much as digits as its factorization.

438210900641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 438210900641 in words is "four hundred thirty-eight billion, two hundred ten million, nine hundred thousand, six hundred forty-one".