2001140957 has 2 divisors, whose sum is σ = 2001140958. Its totient is φ = 2001140956.

The previous prime is 2001140909. The next prime is 2001140983. The reversal of 2001140957 is 7590411002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2001130756 + 10201 = 44734^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001140957 - 2³⁰ = 927399133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001140257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000570478 + 1000570479.

It is an arithmetic number, because the mean of its divisors is an integer number (1000570479).

Almost surely, 2^2001140957 is an apocalyptic number.

It is an amenable number.

2001140957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001140957 is an equidigital number, since it uses as much as digits as its factorization.

2001140957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2001140957 is about 44734.1140182747. The cubic root of 2001140957 is about 1260.1605903066.

Adding to 2001140957 its reverse (7590411002), we get a palindrome (9591551959).

The spelling of 2001140957 in words is "two billion, one million, one hundred forty thousand, nine hundred fifty-seven".