2185054801 has 2 divisors, whose sum is σ = 2185054802. Its totient is φ = 2185054800.

The previous prime is 2185054799. The next prime is 2185054877. The reversal of 2185054801 is 1084505812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2102681025 + 82373776 = 45855^2 + 9076^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185054801 - 2¹ = 2185054799 is a prime.

Together with 2185054799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2185058801) 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, 1092527400 + 1092527401.

It is an arithmetic number, because the mean of its divisors is an integer number (1092527401).

Almost surely, 2^2185054801 is an apocalyptic number.

It is an amenable number.

2185054801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185054801 is an equidigital number, since it uses as much as digits as its factorization.

2185054801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 2185054801 is about 46744.5697487954. The cubic root of 2185054801 is about 1297.6396620292.

The spelling of 2185054801 in words is "two billion, one hundred eighty-five million, fifty-four thousand, eight hundred one".