6457669218 has 256 divisors, whose sum is σ = 19398758400. Its totient is φ = 1537781760.

The previous prime is 6457669189. The next prime is 6457669307. The reversal of 6457669218 is 8129667546.

6457669218 is a `hidden beast` number, since 6 + 4 + 576 + 69 + 2 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 in 127 ways as a sum of consecutive naturals, for example, 10432113 + ... + 10432731.

It is an arithmetic number, because the mean of its divisors is an integer number (75776400).

Almost surely, 2^6457669218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6457669218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9699379200).

6457669218 is an abundant number, since it is smaller than the sum of its proper divisors (12941089182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6457669218 is a wasteful number, since it uses less digits than its factorization.

6457669218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 848 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 6457669218 is about 80359.6243022577. The cubic root of 6457669218 is about 1862.1954668556.

The spelling of 6457669218 in words is "six billion, four hundred fifty-seven million, six hundred sixty-nine thousand, two hundred eighteen".