2003001389 has 2 divisors, whose sum is σ = 2003001390. Its totient is φ = 2003001388.

The previous prime is 2003001367. The next prime is 2003001449. The reversal of 2003001389 is 9831003002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1923524164 + 79477225 = 43858^2 + 8915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003001389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003001289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001500694 + 1001500695.

It is an arithmetic number, because the mean of its divisors is an integer number (1001500695).

Almost surely, 2^2003001389 is an apocalyptic number.

It is an amenable number.

2003001389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003001389 is an equidigital number, since it uses as much as digits as its factorization.

2003001389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2003001389 is about 44754.9035190559. The cubic root of 2003001389 is about 1260.5509870821.

The spelling of 2003001389 in words is "two billion, three million, one thousand, three hundred eighty-nine".