180943157 has 2 divisors, whose sum is σ = 180943158. Its totient is φ = 180943156.

The previous prime is 180943117. The next prime is 180943199. The reversal of 180943157 is 751349081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170276401 + 10666756 = 13049^2 + 3266^2 .

It is a cyclic number.

It is not a de Polignac number, because 180943157 - 2¹⁴ = 180926773 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180943157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180943117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90471578 + 90471579.

It is an arithmetic number, because the mean of its divisors is an integer number (90471579).

Almost surely, 2^180943157 is an apocalyptic number.

It is an amenable number.

180943157 is a deficient number, since it is larger than the sum of its proper divisors (1).

180943157 is an equidigital number, since it uses as much as digits as its factorization.

180943157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 180943157 is about 13451.5113277282. The cubic root of 180943157 is about 565.6060607071.

The spelling of 180943157 in words is "one hundred eighty million, nine hundred forty-three thousand, one hundred fifty-seven".