1375343173 has 2 divisors, whose sum is σ = 1375343174. Its totient is φ = 1375343172.

The previous prime is 1375343107. The next prime is 1375343191. The reversal of 1375343173 is 3713435731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290390084 + 84953089 = 35922^2 + 9217^2 .

It is an emirp because it is prime and its reverse (3713435731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375343173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375343273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687671586 + 687671587.

It is an arithmetic number, because the mean of its divisors is an integer number (687671587).

Almost surely, 2^1375343173 is an apocalyptic number.

It is an amenable number.

1375343173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375343173 is an equidigital number, since it uses as much as digits as its factorization.

1375343173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 37.

The square root of 1375343173 is about 37085.6194905788. The cubic root of 1375343173 is about 1112.0825478828.

The spelling of 1375343173 in words is "one billion, three hundred seventy-five million, three hundred forty-three thousand, one hundred seventy-three".