2100329989 has 2 divisors, whose sum is σ = 2100329990. Its totient is φ = 2100329988.

The previous prime is 2100329981. The next prime is 2100330013. The reversal of 2100329989 is 9899230012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1830385089 + 269944900 = 42783^2 + 16430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100329989 - 2³ = 2100329981 is a prime.

It is a super-2 number, since 2×2100329989² = 8822772125385480242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100329981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050164994 + 1050164995.

It is an arithmetic number, because the mean of its divisors is an integer number (1050164995).

Almost surely, 2^2100329989 is an apocalyptic number.

It is an amenable number.

2100329989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100329989 is an equidigital number, since it uses as much as digits as its factorization.

2100329989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 2100329989 is about 45829.3572832960. The cubic root of 2100329989 is about 1280.6462371948.

The spelling of 2100329989 in words is "two billion, one hundred million, three hundred twenty-nine thousand, nine hundred eighty-nine".