1438979082369 has 4 divisors (see below), whose sum is σ = 1918638776496. Its totient is φ = 959319388244.

The previous prime is 1438979082337. The next prime is 1438979082371. The reversal of 1438979082369 is 9632809798341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1438979082369 - 2⁵ = 1438979082337 is a prime.

It is a super-2 number, since 2×1438979082369² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1438979082329) 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 in 3 ways as a sum of consecutive naturals, for example, 239829847059 + ... + 239829847064.

It is an arithmetic number, because the mean of its divisors is an integer number (479659694124).

Almost surely, 2^{1438979082369} is an apocalyptic number.

It is an amenable number.

1438979082369 is a deficient number, since it is larger than the sum of its proper divisors (479659694127).

1438979082369 is an equidigital number, since it uses as much as digits as its factorization.

1438979082369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479659694126.

The product of its (nonzero) digits is 141087744, while the sum is 69.

The spelling of 1438979082369 in words is "one trillion, four hundred thirty-eight billion, nine hundred seventy-nine million, eighty-two thousand, three hundred sixty-nine".