203828129 has 2 divisors, whose sum is σ = 203828130. Its totient is φ = 203828128.

The previous prime is 203828123. The next prime is 203828161. The reversal of 203828129 is 921828302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189750625 + 14077504 = 13775^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 203828129 - 2⁸ = 203827873 is a prime.

It is not a weakly prime, because it can be changed into another prime (203828123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101914064 + 101914065.

It is an arithmetic number, because the mean of its divisors is an integer number (101914065).

Almost surely, 2^203828129 is an apocalyptic number.

It is an amenable number.

203828129 is a deficient number, since it is larger than the sum of its proper divisors (1).

203828129 is an equidigital number, since it uses as much as digits as its factorization.

203828129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 203828129 is about 14276.8389008211. The cubic root of 203828129 is about 588.5111642841.

The spelling of 203828129 in words is "two hundred three million, eight hundred twenty-eight thousand, one hundred twenty-nine".