10000001989 has 2 divisors, whose sum is σ = 10000001990. Its totient is φ = 10000001988.

The previous prime is 10000001969. The next prime is 10000002011. The reversal of 10000001989 is 98910000001.

10000001989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7959673089 + 2040328900 = 89217^2 + 45170^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000001989 - 2⁷ = 10000001861 is a prime.

It is a super-2 number, since 2×10000001989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10000001959) 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, 5000000994 + 5000000995.

It is an arithmetic number, because the mean of its divisors is an integer number (5000000995).

Almost surely, 2^10000001989 is an apocalyptic number.

It is an amenable number.

10000001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000001989 is an equidigital number, since it uses as much as digits as its factorization.

10000001989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

It can be divided in two parts, 10000001 and 989, that multiplied together give a palindrome (9890000989).

The spelling of 10000001989 in words is "ten billion, one thousand, nine hundred eighty-nine".