2164433603989 has 2 divisors, whose sum is σ = 2164433603990. Its totient is φ = 2164433603988.

The previous prime is 2164433603963. The next prime is 2164433604017. The reversal of 2164433603989 is 9893063344612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1819711967089 + 344721636900 = 1348967^2 + 587130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164433603989 - 2⁷ = 2164433603861 is a prime.

It is a super-2 number, since 2×2164433603989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164433601989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082216801994 + 1082216801995.

It is an arithmetic number, because the mean of its divisors is an integer number (1082216801995).

Almost surely, 2^{2164433603989} is an apocalyptic number.

It is an amenable number.

2164433603989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164433603989 is an equidigital number, since it uses as much as digits as its factorization.

2164433603989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 58.

The spelling of 2164433603989 in words is "two trillion, one hundred sixty-four billion, four hundred thirty-three million, six hundred three thousand, nine hundred eighty-nine".