183128401 has 2 divisors, whose sum is σ = 183128402. Its totient is φ = 183128400.

The previous prime is 183128347. The next prime is 183128419. The reversal of 183128401 is 104821381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122677776 + 60450625 = 11076^2 + 7775^2 .

It is a cyclic number.

It is not a de Polignac number, because 183128401 - 2⁷ = 183128273 is a prime.

It is a super-2 number, since 2×183128401² = 67072022505633602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 183128401.

It is not a weakly prime, because it can be changed into another prime (183128431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91564200 + 91564201.

It is an arithmetic number, because the mean of its divisors is an integer number (91564201).

Almost surely, 2^183128401 is an apocalyptic number.

It is an amenable number.

183128401 is a deficient number, since it is larger than the sum of its proper divisors (1).

183128401 is an equidigital number, since it uses as much as digits as its factorization.

183128401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 183128401 is about 13532.4942638081. The cubic root of 183128401 is about 567.8738902480.

Adding to 183128401 its reverse (104821381), we get a palindrome (287949782).

The spelling of 183128401 in words is "one hundred eighty-three million, one hundred twenty-eight thousand, four hundred one".