2101783129 has 2 divisors, whose sum is σ = 2101783130. Its totient is φ = 2101783128.

The previous prime is 2101783087. The next prime is 2101783141. The reversal of 2101783129 is 9213871012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2038341904 + 63441225 = 45148^2 + 7965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101783129 - 2⁷ = 2101783001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101783094 and 2101783103.

It is not a weakly prime, because it can be changed into another prime (2101783169) 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, 1050891564 + 1050891565.

It is an arithmetic number, because the mean of its divisors is an integer number (1050891565).

Almost surely, 2^2101783129 is an apocalyptic number.

It is an amenable number.

2101783129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101783129 is an equidigital number, since it uses as much as digits as its factorization.

2101783129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 2101783129 is about 45845.2083537636. The cubic root of 2101783129 is about 1280.9415129009.

The spelling of 2101783129 in words is "two billion, one hundred one million, seven hundred eighty-three thousand, one hundred twenty-nine".