2056149917 has 2 divisors, whose sum is σ = 2056149918. Its totient is φ = 2056149916.

The previous prime is 2056149859. The next prime is 2056150003. The reversal of 2056149917 is 7199416502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2041142041 + 15007876 = 45179^2 + 3874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056149917 - 2¹² = 2056145821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056169917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028074958 + 1028074959.

It is an arithmetic number, because the mean of its divisors is an integer number (1028074959).

Almost surely, 2^2056149917 is an apocalyptic number.

It is an amenable number.

2056149917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056149917 is an equidigital number, since it uses as much as digits as its factorization.

2056149917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 2056149917 is about 45344.7893037337. The cubic root of 2056149917 is about 1271.6031415340.

The spelling of 2056149917 in words is "two billion, fifty-six million, one hundred forty-nine thousand, nine hundred seventeen".