1438812528453 has 12 divisors (see below), whose sum is σ = 2078403096588. Its totient is φ = 959153736960.

The previous prime is 1438812528437. The next prime is 1438812528463. The reversal of 1438812528453 is 3548252188341.

It is a happy number.

1438812528453 is a `hidden beast` number, since 1 + 4 + 38 + 81 + 2 + 528 + 4 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 191072145924 + 1247740382529 = 437118^2 + 1117023^2 .

It is not a de Polignac number, because 1438812528453 - 2⁴ = 1438812528437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1438812528453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438812528463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4384108 + ... + 4700853.

It is an arithmetic number, because the mean of its divisors is an integer number (173200258049).

Almost surely, 2^{1438812528453} is an apocalyptic number.

It is an amenable number.

1438812528453 is a deficient number, since it is larger than the sum of its proper divisors (639590568135).

1438812528453 is a wasteful number, since it uses less digits than its factorization.

1438812528453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9102564 (or 9102561 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 1438812528453 in words is "one trillion, four hundred thirty-eight billion, eight hundred twelve million, five hundred twenty-eight thousand, four hundred fifty-three".