6398902361 has 2 divisors, whose sum is σ = 6398902362. Its totient is φ = 6398902360.

The previous prime is 6398902351. The next prime is 6398902399. The reversal of 6398902361 is 1632098936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6030454336 + 368448025 = 77656^2 + 19195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6398902361 is a prime.

It is a super-3 number, since 3×6398902361³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (6398902351) 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, 3199451180 + 3199451181.

It is an arithmetic number, because the mean of its divisors is an integer number (3199451181).

Almost surely, 2^6398902361 is an apocalyptic number.

It is an amenable number.

6398902361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398902361 is an equidigital number, since it uses as much as digits as its factorization.

6398902361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 6398902361 is about 79993.1394620814. The cubic root of 6398902361 is about 1856.5293859406.

The spelling of 6398902361 in words is "six billion, three hundred ninety-eight million, nine hundred two thousand, three hundred sixty-one".