1375166171 has 2 divisors, whose sum is σ = 1375166172. Its totient is φ = 1375166170.

The previous prime is 1375166141. The next prime is 1375166179. The reversal of 1375166171 is 1716615731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375166171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375166179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687583085 + 687583086.

It is an arithmetic number, because the mean of its divisors is an integer number (687583086).

Almost surely, 2^1375166171 is an apocalyptic number.

1375166171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375166171 is an equidigital number, since it uses as much as digits as its factorization.

1375166171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 38.

The square root of 1375166171 is about 37083.2330170928. The cubic root of 1375166171 is about 1112.0348387524.

The spelling of 1375166171 in words is "one billion, three hundred seventy-five million, one hundred sixty-six thousand, one hundred seventy-one".