2146550129 has 2 divisors, whose sum is σ = 2146550130. Its totient is φ = 2146550128.

The previous prime is 2146550117. The next prime is 2146550177. The reversal of 2146550129 is 9210556412.

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., 1735555600 + 410994529 = 41660^2 + 20273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146550129 - 2²⁸ = 1878114673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2146550429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073275064 + 1073275065.

It is an arithmetic number, because the mean of its divisors is an integer number (1073275065).

Almost surely, 2^2146550129 is an apocalyptic number.

It is an amenable number.

2146550129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146550129 is an equidigital number, since it uses as much as digits as its factorization.

2146550129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2146550129 is about 46330.8766267162. The cubic root of 2146550129 is about 1289.9721823619.

The spelling of 2146550129 in words is "two billion, one hundred forty-six million, five hundred fifty thousand, one hundred twenty-nine".