180978253 has 2 divisors, whose sum is σ = 180978254. Its totient is φ = 180978252.

The previous prime is 180978229. The next prime is 180978257. The reversal of 180978253 is 352879081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129095044 + 51883209 = 11362^2 + 7203^2 .

It is a cyclic number.

It is not a de Polignac number, because 180978253 - 2⁵ = 180978221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180978257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90489126 + 90489127.

It is an arithmetic number, because the mean of its divisors is an integer number (90489127).

Almost surely, 2^180978253 is an apocalyptic number.

It is an amenable number.

180978253 is a deficient number, since it is larger than the sum of its proper divisors (1).

180978253 is an equidigital number, since it uses as much as digits as its factorization.

180978253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 180978253 is about 13452.8158019056. The cubic root of 180978253 is about 565.6426269366.

The spelling of 180978253 in words is "one hundred eighty million, nine hundred seventy-eight thousand, two hundred fifty-three".