1375506305 has 8 divisors (see below), whose sum is σ = 1650873192. Its totient is φ = 1100227968.

The previous prime is 1375506289. The next prime is 1375506323. The reversal of 1375506305 is 5036055731.

It can be written as a sum of positive squares in 4 ways, for example, as 158961664 + 1216544641 = 12608^2 + 34879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1375506305 - 2⁴ = 1375506289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18989 + ... + 55781.

It is an arithmetic number, because the mean of its divisors is an integer number (206359149).

Almost surely, 2^1375506305 is an apocalyptic number.

It is an amenable number.

1375506305 is a deficient number, since it is larger than the sum of its proper divisors (275366887).

1375506305 is an equidigital number, since it uses as much as digits as its factorization.

1375506305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44275.

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 1375506305 is about 37087.8188223573. The cubic root of 1375506305 is about 1112.1265148678.

The spelling of 1375506305 in words is "one billion, three hundred seventy-five million, five hundred six thousand, three hundred five".