1002001849957 has 2 divisors, whose sum is σ = 1002001849958. Its totient is φ = 1002001849956.

The previous prime is 1002001849921. The next prime is 1002001850081. The reversal of 1002001849957 is 7599481002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739515722401 + 262486127556 = 859951^2 + 512334^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002001849957 - 2⁷ = 1002001849829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002001844957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000924978 + 501000924979.

It is an arithmetic number, because the mean of its divisors is an integer number (501000924979).

Almost surely, 2^{1002001849957} is an apocalyptic number.

It is an amenable number.

1002001849957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001849957 is an equidigital number, since it uses as much as digits as its factorization.

1002001849957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 1002001849957 in words is "one trillion, two billion, one million, eight hundred forty-nine thousand, nine hundred fifty-seven".