180122477 has 2 divisors, whose sum is σ = 180122478. Its totient is φ = 180122476.

The previous prime is 180122443. The next prime is 180122483. The reversal of 180122477 is 774221081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175854121 + 4268356 = 13261^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 180122477 - 2¹² = 180118381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180122417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90061238 + 90061239.

It is an arithmetic number, because the mean of its divisors is an integer number (90061239).

Almost surely, 2^180122477 is an apocalyptic number.

It is an amenable number.

180122477 is a deficient number, since it is larger than the sum of its proper divisors (1).

180122477 is an equidigital number, since it uses as much as digits as its factorization.

180122477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 180122477 is about 13420.9715371131. The cubic root of 180122477 is about 564.7496497049.

The spelling of 180122477 in words is "one hundred eighty million, one hundred twenty-two thousand, four hundred seventy-seven".