2000001973 has 2 divisors, whose sum is σ = 2000001974. Its totient is φ = 2000001972.

The previous prime is 2000001953. The next prime is 2000002031. The reversal of 2000001973 is 3791000002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1516089969 + 483912004 = 38937^2 + 21998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000001973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000001953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000000986 + 1000000987.

It is an arithmetic number, because the mean of its divisors is an integer number (1000000987).

Almost surely, 2^2000001973 is an apocalyptic number.

It is an amenable number.

2000001973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000001973 is an equidigital number, since it uses as much as digits as its factorization.

2000001973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 2000001973 is about 44721.3816088010. The cubic root of 2000001973 is about 1259.9214641988.

Adding to 2000001973 its reverse (3791000002), we get a palindrome (5791001975).

The spelling of 2000001973 in words is "two billion, one thousand, nine hundred seventy-three".