1002011001389 has 2 divisors, whose sum is σ = 1002011001390. Its totient is φ = 1002011001388.

The previous prime is 1002011001377. The next prime is 1002011001401. The reversal of 1002011001389 is 9831001102001.

It is a balanced prime because it is at equal distance from previous prime (1002011001377) and next prime (1002011001401).

It can be written as a sum of positive squares in only one way, i.e., 502621445764 + 499389555625 = 708958^2 + 706675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002011001389 - 2²⁰ = 1002009952813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002011001989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501005500694 + 501005500695.

It is an arithmetic number, because the mean of its divisors is an integer number (501005500695).

Almost surely, 2^{1002011001389} is an apocalyptic number.

It is an amenable number.

1002011001389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002011001389 is an equidigital number, since it uses as much as digits as its factorization.

1002011001389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 1002011001389 in words is "one trillion, two billion, eleven million, one thousand, three hundred eighty-nine".