2001970057 has 2 divisors, whose sum is σ = 2001970058. Its totient is φ = 2001970056.

The previous prime is 2001970051. The next prime is 2001970073. The reversal of 2001970057 is 7500791002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1714870921 + 287099136 = 41411^2 + 16944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001970057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001970051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000985028 + 1000985029.

It is an arithmetic number, because the mean of its divisors is an integer number (1000985029).

Almost surely, 2^2001970057 is an apocalyptic number.

It is an amenable number.

2001970057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001970057 is an equidigital number, since it uses as much as digits as its factorization.

2001970057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 2001970057 is about 44743.3800354868. The cubic root of 2001970057 is about 1260.3346001856.

The spelling of 2001970057 in words is "two billion, one million, nine hundred seventy thousand, fifty-seven".