6448923198 has 48 divisors (see below), whose sum is σ = 14543352720. Its totient is φ = 2062755072.

The previous prime is 6448923193. The next prime is 6448923199. The reversal of 6448923198 is 8913298446.

6448923198 is a `hidden beast` number, since 6 + 448 + 9 + 2 + 3 + 198 = 666.

It is a super-2 number, since 2×6448923198² = 83177220827405094408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448923193) 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 in 23 ways as a sum of consecutive naturals, for example, 47190 + ... + 122982.

It is an arithmetic number, because the mean of its divisors is an integer number (302986515).

Almost surely, 2^6448923198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6448923198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7271676360).

6448923198 is an abundant number, since it is smaller than the sum of its proper divisors (8094429522).

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

6448923198 is a wasteful number, since it uses less digits than its factorization.

6448923198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75993 (or 75990 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 6448923198 is about 80305.1878647949. The cubic root of 6448923198 is about 1861.3543916150.

The spelling of 6448923198 in words is "six billion, four hundred forty-eight million, nine hundred twenty-three thousand, one hundred ninety-eight".