1373827705 has 4 divisors (see below), whose sum is σ = 1648593252. Its totient is φ = 1099062160.

The previous prime is 1373827673. The next prime is 1373827709. The reversal of 1373827705 is 5077283731.

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 1034973241 + 338854464 = 32171^2 + 18408^2 .

It is not a de Polignac number, because 1373827705 - 2⁵ = 1373827673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373827709) 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, 137382766 + ... + 137382775.

It is an arithmetic number, because the mean of its divisors is an integer number (412148313).

Almost surely, 2^1373827705 is an apocalyptic number.

It is an amenable number.

1373827705 is a deficient number, since it is larger than the sum of its proper divisors (274765547).

1373827705 is an equidigital number, since it uses as much as digits as its factorization.

1373827705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274765546.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 1373827705 is about 37065.1818422627. The cubic root of 1373827705 is about 1111.6739359480.

The spelling of 1373827705 in words is "one billion, three hundred seventy-three million, eight hundred twenty-seven thousand, seven hundred five".