185980358129 has 2 divisors, whose sum is σ = 185980358130. Its totient is φ = 185980358128.

The previous prime is 185980358107. The next prime is 185980358131. The reversal of 185980358129 is 921853089581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183057333904 + 2923024225 = 427852^2 + 54065^2 .

It is a cyclic number.

It is not a de Polignac number, because 185980358129 - 2²⁰ = 185979309553 is a prime.

Together with 185980358131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (185980358189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92990179064 + 92990179065.

It is an arithmetic number, because the mean of its divisors is an integer number (92990179065).

Almost surely, 2^185980358129 is an apocalyptic number.

It is an amenable number.

185980358129 is a deficient number, since it is larger than the sum of its proper divisors (1).

185980358129 is an equidigital number, since it uses as much as digits as its factorization.

185980358129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 59.

The spelling of 185980358129 in words is "one hundred eighty-five billion, nine hundred eighty million, three hundred fifty-eight thousand, one hundred twenty-nine".