3179665649 has 2 divisors, whose sum is σ = 3179665650. Its totient is φ = 3179665648.

The previous prime is 3179665639. The next prime is 3179665651. The reversal of 3179665649 is 9465669713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3170253025 + 9412624 = 56305^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 3179665649 - 2¹² = 3179661553 is a prime.

It is a super-2 number, since 2×3179665649² = 20220547278861182402, which contains 22 as substring.

Together with 3179665651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3179665594 and 3179665603.

It is not a weakly prime, because it can be changed into another prime (3179665609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1589832824 + 1589832825.

It is an arithmetic number, because the mean of its divisors is an integer number (1589832825).

Almost surely, 2^3179665649 is an apocalyptic number.

It is an amenable number.

3179665649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3179665649 is an equidigital number, since it uses as much as digits as its factorization.

3179665649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 56.

The square root of 3179665649 is about 56388.5240895699. The cubic root of 3179665649 is about 1470.4846149275.

The spelling of 3179665649 in words is "three billion, one hundred seventy-nine million, six hundred sixty-five thousand, six hundred forty-nine".