1438820748575 has 24 divisors (see below), whose sum is σ = 2047475247840. Its totient is φ = 982526054400.

The previous prime is 1438820748571. The next prime is 1438820748587. The reversal of 1438820748575 is 5758470288341.

It is a happy number.

It is not a de Polignac number, because 1438820748575 - 2² = 1438820748571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438820748571) 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 in 23 ways as a sum of consecutive naturals, for example, 17015570 + ... + 17099919.

It is an arithmetic number, because the mean of its divisors is an integer number (85311468660).

Almost surely, 2^{1438820748575} is an apocalyptic number.

1438820748575 is a deficient number, since it is larger than the sum of its proper divisors (608654499265).

1438820748575 is a wasteful number, since it uses less digits than its factorization.

1438820748575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34115747 (or 34115742 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 62.

The spelling of 1438820748575 in words is "one trillion, four hundred thirty-eight billion, eight hundred twenty million, seven hundred forty-eight thousand, five hundred seventy-five".