3129948673 has 2 divisors, whose sum is σ = 3129948674. Its totient is φ = 3129948672.

The previous prime is 3129948649. The next prime is 3129948719. The reversal of 3129948673 is 3768499213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2755410064 + 374538609 = 52492^2 + 19353^2 .

It is a cyclic number.

It is not a de Polignac number, because 3129948673 - 2⁹ = 3129948161 is a prime.

It is a super-2 number, since 2×3129948673² = 19593157391228921858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3129948673.

It is not a weakly prime, because it can be changed into another prime (3129948623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564974336 + 1564974337.

It is an arithmetic number, because the mean of its divisors is an integer number (1564974337).

Almost surely, 2^3129948673 is an apocalyptic number.

It is an amenable number.

3129948673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129948673 is an equidigital number, since it uses as much as digits as its factorization.

3129948673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 3129948673 is about 55945.9442050985. The cubic root of 3129948673 is about 1462.7801958387.

The spelling of 3129948673 in words is "three billion, one hundred twenty-nine million, nine hundred forty-eight thousand, six hundred seventy-three".