1375005673 has 4 divisors (see below), whose sum is σ = 1375583620. Its totient is φ = 1374427728.

The previous prime is 1375005647. The next prime is 1375005683. The reversal of 1375005673 is 3765005731.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 373726224 + 1001279449 = 19332^2 + 31643^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375005673 - 2⁵ = 1375005641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375005613) 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 3 ways as a sum of consecutive naturals, for example, 285390 + ... + 290167.

It is an arithmetic number, because the mean of its divisors is an integer number (343895905).

Almost surely, 2^1375005673 is an apocalyptic number.

It is an amenable number.

1375005673 is a deficient number, since it is larger than the sum of its proper divisors (577947).

1375005673 is an equidigital number, since it uses as much as digits as its factorization.

1375005673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577946.

The product of its (nonzero) digits is 66150, while the sum is 37.

The square root of 1375005673 is about 37081.0689301158. The cubic root of 1375005673 is about 1111.9915745721.

The spelling of 1375005673 in words is "one billion, three hundred seventy-five million, five thousand, six hundred seventy-three".