1920379171 has 2 divisors, whose sum is σ = 1920379172. Its totient is φ = 1920379170.

The previous prime is 1920379169. The next prime is 1920379189. The reversal of 1920379171 is 1719730291.

It is a weak prime.

It is an emirp because it is prime and its reverse (1719730291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1920379171 - 2¹ = 1920379169 is a prime.

Together with 1920379169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1920379271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960189585 + 960189586.

It is an arithmetic number, because the mean of its divisors is an integer number (960189586).

Almost surely, 2^1920379171 is an apocalyptic number.

1920379171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920379171 is an equidigital number, since it uses as much as digits as its factorization.

1920379171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 1920379171 is about 43822.1310641096. The cubic root of 1920379171 is about 1242.9748145279.

The spelling of 1920379171 in words is "one billion, nine hundred twenty million, three hundred seventy-nine thousand, one hundred seventy-one".