2003012020949 has 2 divisors, whose sum is σ = 2003012020950. Its totient is φ = 2003012020948.

The previous prime is 2003012020943. The next prime is 2003012021057. The reversal of 2003012020949 is 9490202103002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1950533458225 + 52478562724 = 1396615^2 + 229082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003012020949 - 2²⁰ = 2003010972373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003012020943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001506010474 + 1001506010475.

It is an arithmetic number, because the mean of its divisors is an integer number (1001506010475).

Almost surely, 2^{2003012020949} is an apocalyptic number.

It is an amenable number.

2003012020949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003012020949 is an equidigital number, since it uses as much as digits as its factorization.

2003012020949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 2003012020949 in words is "two trillion, three billion, twelve million, twenty thousand, nine hundred forty-nine".