6402187801 has 2 divisors, whose sum is σ = 6402187802. Its totient is φ = 6402187800.

The previous prime is 6402187751. The next prime is 6402187849. The reversal of 6402187801 is 1087812046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5230905625 + 1171282176 = 72325^2 + 34224^2 .

It is a cyclic number.

It is not a de Polignac number, because 6402187801 - 2⁹ = 6402187289 is a prime.

It is not a weakly prime, because it can be changed into another prime (6402187201) 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, 3201093900 + 3201093901.

It is an arithmetic number, because the mean of its divisors is an integer number (3201093901).

Almost surely, 2^6402187801 is an apocalyptic number.

It is an amenable number.

6402187801 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402187801 is an equidigital number, since it uses as much as digits as its factorization.

6402187801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 6402187801 is about 80013.6725878771. The cubic root of 6402187801 is about 1856.8470691906.

Adding to 6402187801 its reverse (1087812046), we get a palindrome (7489999847).

The spelling of 6402187801 in words is "six billion, four hundred two million, one hundred eighty-seven thousand, eight hundred one".