180342857 has 2 divisors, whose sum is σ = 180342858. Its totient is φ = 180342856.

The previous prime is 180342823. The next prime is 180342863. The reversal of 180342857 is 758243081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155850256 + 24492601 = 12484^2 + 4949^2 .

It is a cyclic number.

It is not a de Polignac number, because 180342857 - 2⁸ = 180342601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180342857.

It is not a weakly prime, because it can be changed into another prime (180342457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90171428 + 90171429.

It is an arithmetic number, because the mean of its divisors is an integer number (90171429).

Almost surely, 2^180342857 is an apocalyptic number.

It is an amenable number.

180342857 is a deficient number, since it is larger than the sum of its proper divisors (1).

180342857 is an equidigital number, since it uses as much as digits as its factorization.

180342857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 180342857 is about 13429.1793122290. The cubic root of 180342857 is about 564.9798797231.

The spelling of 180342857 in words is "one hundred eighty million, three hundred forty-two thousand, eight hundred fifty-seven".