1375152809 has 4 divisors (see below), whose sum is σ = 1376117904. Its totient is φ = 1374187716.

The previous prime is 1375152791. The next prime is 1375152811. The reversal of 1375152809 is 9082515731.

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 a de Polignac number, because none of the positive numbers 2^k-1375152809 is a prime.

It is a super-3 number, since 3×1375152809³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1375152859) 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, 480407 + ... + 483260.

It is an arithmetic number, because the mean of its divisors is an integer number (344029476).

Almost surely, 2^1375152809 is an apocalyptic number.

It is an amenable number.

1375152809 is a deficient number, since it is larger than the sum of its proper divisors (965095).

1375152809 is an equidigital number, since it uses as much as digits as its factorization.

1375152809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965094.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 1375152809 is about 37083.0528543700. The cubic root of 1375152809 is about 1112.0312369919.

The spelling of 1375152809 in words is "one billion, three hundred seventy-five million, one hundred fifty-two thousand, eight hundred nine".