180198913 has 2 divisors, whose sum is σ = 180198914. Its totient is φ = 180198912.

The previous prime is 180198883. The next prime is 180198919. The reversal of 180198913 is 319891081.

It is a happy number.

180198913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156550144 + 23648769 = 12512^2 + 4863^2 .

It is a cyclic number.

It is not a de Polignac number, because 180198913 - 2⁵ = 180198881 is a prime.

It is not a weakly prime, because it can be changed into another prime (180198919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90099456 + 90099457.

It is an arithmetic number, because the mean of its divisors is an integer number (90099457).

Almost surely, 2^180198913 is an apocalyptic number.

It is an amenable number.

180198913 is a deficient number, since it is larger than the sum of its proper divisors (1).

180198913 is an equidigital number, since it uses as much as digits as its factorization.

180198913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 180198913 is about 13423.8188679675. The cubic root of 180198913 is about 564.8295233188.

The spelling of 180198913 in words is "one hundred eighty million, one hundred ninety-eight thousand, nine hundred thirteen".