1679620171 has 2 divisors, whose sum is σ = 1679620172. Its totient is φ = 1679620170.

The previous prime is 1679620141. The next prime is 1679620181. The reversal of 1679620171 is 1710269761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1679620171 - 2¹³ = 1679611979 is a prime.

It is a super-2 number, since 2×1679620171² = 5642247837660138482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1679620141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839810085 + 839810086.

It is an arithmetic number, because the mean of its divisors is an integer number (839810086).

Almost surely, 2^1679620171 is an apocalyptic number.

1679620171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679620171 is an equidigital number, since it uses as much as digits as its factorization.

1679620171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 1679620171 is about 40983.1693625566. The cubic root of 1679620171 is about 1188.6947935646.

The spelling of 1679620171 in words is "one billion, six hundred seventy-nine million, six hundred twenty thousand, one hundred seventy-one".