6420818363 has 8 divisors (see below), whose sum is σ = 6630973440. Its totient is φ = 6210852840.

The previous prime is 6420818309. The next prime is 6420818387. The reversal of 6420818363 is 3638180246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6420818363 - 2¹⁴ = 6420801979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6420818363.

It is not an unprimeable number, because it can be changed into a prime (6420818263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23156 + ... + 115662.

It is an arithmetic number, because the mean of its divisors is an integer number (828871680).

Almost surely, 2^6420818363 is an apocalyptic number.

6420818363 is a deficient number, since it is larger than the sum of its proper divisors (210155077).

6420818363 is a wasteful number, since it uses less digits than its factorization.

6420818363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94777.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 6420818363 is about 80130.0091289150. The cubic root of 6420818363 is about 1858.6464854232.

The spelling of 6420818363 in words is "six billion, four hundred twenty million, eight hundred eighteen thousand, three hundred sixty-three".