1438075165 has 4 divisors (see below), whose sum is σ = 1725690204. Its totient is φ = 1150460128.

The previous prime is 1438075159. The next prime is 1438075193. The reversal of 1438075165 is 5615708341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5615708341 = 271 ⋅20722171.

It can be written as a sum of positive squares in 2 ways, for example, as 741854169 + 696220996 = 27237^2 + 26386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438075165 - 2⁹ = 1438074653 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 143807512 + ... + 143807521.

It is an arithmetic number, because the mean of its divisors is an integer number (431422551).

Almost surely, 2^1438075165 is an apocalyptic number.

It is an amenable number.

1438075165 is a deficient number, since it is larger than the sum of its proper divisors (287615039).

1438075165 is an equidigital number, since it uses as much as digits as its factorization.

1438075165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287615038.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 1438075165 is about 37921.9615130863. The cubic root of 1438075165 is about 1128.7398605596.

The spelling of 1438075165 in words is "one billion, four hundred thirty-eight million, seventy-five thousand, one hundred sixty-five".