2005187029 has 2 divisors, whose sum is σ = 2005187030. Its totient is φ = 2005187028.

The previous prime is 2005187027. The next prime is 2005187033. The reversal of 2005187029 is 9207815002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1995408900 + 9778129 = 44670^2 + 3127^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005187029 - 2¹ = 2005187027 is a prime.

Together with 2005187027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2005186985 and 2005187003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005187027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002593514 + 1002593515.

It is an arithmetic number, because the mean of its divisors is an integer number (1002593515).

Almost surely, 2^2005187029 is an apocalyptic number.

It is an amenable number.

2005187029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005187029 is an equidigital number, since it uses as much as digits as its factorization.

2005187029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 2005187029 is about 44779.3147446452. The cubic root of 2005187029 is about 1261.0093174611.

The spelling of 2005187029 in words is "two billion, five million, one hundred eighty-seven thousand, twenty-nine".