180136513 has 2 divisors, whose sum is σ = 180136514. Its totient is φ = 180136512.

The previous prime is 180136459. The next prime is 180136519. The reversal of 180136513 is 315631081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 62457409 = 10848^2 + 7903^2 .

It is a cyclic number.

It is not a de Polignac number, because 180136513 - 2²¹ = 178039361 is a prime.

It is not a weakly prime, because it can be changed into another prime (180136519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90068256 + 90068257.

It is an arithmetic number, because the mean of its divisors is an integer number (90068257).

Almost surely, 2^180136513 is an apocalyptic number.

It is an amenable number.

180136513 is a deficient number, since it is larger than the sum of its proper divisors (1).

180136513 is an equidigital number, since it uses as much as digits as its factorization.

180136513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 180136513 is about 13421.4944398901. The cubic root of 180136513 is about 564.7643186500.

Adding to 180136513 its reverse (315631081), we get a palindrome (495767594).

The spelling of 180136513 in words is "one hundred eighty million, one hundred thirty-six thousand, five hundred thirteen".