2409218129 has 2 divisors, whose sum is σ = 2409218130. Its totient is φ = 2409218128.

The previous prime is 2409218113. The next prime is 2409218143. The reversal of 2409218129 is 9218129042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2270331904 + 138886225 = 47648^2 + 11785^2 .

It is a cyclic number.

It is not a de Polignac number, because 2409218129 - 2⁴ = 2409218113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2409218092 and 2409218101.

It is not a weakly prime, because it can be changed into another prime (2409218029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1204609064 + 1204609065.

It is an arithmetic number, because the mean of its divisors is an integer number (1204609065).

Almost surely, 2^2409218129 is an apocalyptic number.

It is an amenable number.

2409218129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2409218129 is an equidigital number, since it uses as much as digits as its factorization.

2409218129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2409218129 is about 49083.7868241642. The cubic root of 2409218129 is about 1340.5778544712.

The spelling of 2409218129 in words is "two billion, four hundred nine million, two hundred eighteen thousand, one hundred twenty-nine".