1438112369 has 2 divisors, whose sum is σ = 1438112370. Its totient is φ = 1438112368.

The previous prime is 1438112363. The next prime is 1438112371. The reversal of 1438112369 is 9632118341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870958144 + 567154225 = 29512^2 + 23815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438112369 - 2²⁸ = 1169676913 is a prime.

It is a super-2 number, since 2×1438112369² = 4136334371741584322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1438112371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1438112363) 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, 719056184 + 719056185.

It is an arithmetic number, because the mean of its divisors is an integer number (719056185).

Almost surely, 2^1438112369 is an apocalyptic number.

It is an amenable number.

1438112369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438112369 is an equidigital number, since it uses as much as digits as its factorization.

1438112369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 1438112369 is about 37922.4520436113. The cubic root of 1438112369 is about 1128.7495942362.

The spelling of 1438112369 in words is "one billion, four hundred thirty-eight million, one hundred twelve thousand, three hundred sixty-nine".