1001020000049 has 2 divisors, whose sum is σ = 1001020000050. Its totient is φ = 1001020000048.

The previous prime is 1001020000007. The next prime is 1001020000051. The reversal of 1001020000049 is 9400000201001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 759686560000 + 241333440049 = 871600^2 + 491257^2 .

It is an emirp because it is prime and its reverse (9400000201001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001020000049 is a prime.

Together with 1001020000051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001019999991 and 1001020000036.

It is not a weakly prime, because it can be changed into another prime (1001020000349) 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, 500510000024 + 500510000025.

It is an arithmetic number, because the mean of its divisors is an integer number (500510000025).

Almost surely, 2^{1001020000049} is an apocalyptic number.

It is an amenable number.

1001020000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001020000049 is an equidigital number, since it uses as much as digits as its factorization.

1001020000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 1001020000049 in words is "one trillion, one billion, twenty million, forty-nine", and thus it is an aban number and an uban number.