1808028401 has 2 divisors, whose sum is σ = 1808028402. Its totient is φ = 1808028400.

The previous prime is 1808028331. The next prime is 1808028451. The reversal of 1808028401 is 1048208081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142440000 + 665588401 = 33800^2 + 25799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1808028401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1808028451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904014200 + 904014201.

It is an arithmetic number, because the mean of its divisors is an integer number (904014201).

Almost surely, 2^1808028401 is an apocalyptic number.

It is an amenable number.

1808028401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808028401 is an equidigital number, since it uses as much as digits as its factorization.

1808028401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 1808028401 is about 42520.9172172944. The cubic root of 1808028401 is about 1218.2462486647.

The spelling of 1808028401 in words is "one billion, eight hundred eight million, twenty-eight thousand, four hundred one".