1438989928027 has 4 divisors (see below), whose sum is σ = 1466140681440. Its totient is φ = 1411839174616.

The previous prime is 1438989928007. The next prime is 1438989928037. The reversal of 1438989928027 is 7208299898341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438989928027 is a prime.

It is a super-2 number, since 2×1438989928027² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438989928007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13575376627 + ... + 13575376732.

It is an arithmetic number, because the mean of its divisors is an integer number (366535170360).

Almost surely, 2^{1438989928027} is an apocalyptic number.

1438989928027 is a deficient number, since it is larger than the sum of its proper divisors (27150753413).

1438989928027 is an equidigital number, since it uses as much as digits as its factorization.

1438989928027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27150753412.

The product of its (nonzero) digits is 125411328, while the sum is 70.

The spelling of 1438989928027 in words is "one trillion, four hundred thirty-eight billion, nine hundred eighty-nine million, nine hundred twenty-eight thousand, twenty-seven".