1438418417 has 2 divisors, whose sum is σ = 1438418418. Its totient is φ = 1438418416.

The previous prime is 1438418347. The next prime is 1438418419. The reversal of 1438418417 is 7148148341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815616481 + 622801936 = 28559^2 + 24956^2 .

It is an emirp because it is prime and its reverse (7148148341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438418417 is a prime.

Together with 1438418419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1438418419) 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, 719209208 + 719209209.

It is an arithmetic number, because the mean of its divisors is an integer number (719209209).

Almost surely, 2^1438418417 is an apocalyptic number.

It is an amenable number.

1438418417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438418417 is an equidigital number, since it uses as much as digits as its factorization.

1438418417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 41.

The square root of 1438418417 is about 37926.4870110586. The cubic root of 1438418417 is about 1128.8296591557.

The spelling of 1438418417 in words is "one billion, four hundred thirty-eight million, four hundred eighteen thousand, four hundred seventeen".