6419909340 has 168 divisors, whose sum is σ = 21768992448. Its totient is φ = 1580238720.

The previous prime is 6419909333. The next prime is 6419909383. The reversal of 6419909340 is 439099146.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 in 55 ways as a sum of consecutive naturals, for example, 172605 + ... + 206475.

It is an arithmetic number, because the mean of its divisors is an integer number (129577336).

Almost surely, 2^6419909340 is an apocalyptic number.

6419909340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6419909340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10884496224).

6419909340 is an abundant number, since it is smaller than the sum of its proper divisors (15349083108).

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

6419909340 is a wasteful number, since it uses less digits than its factorization.

6419909340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33911 (or 33894 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 6419909340 is about 80124.3367523251. The cubic root of 6419909340 is about 1858.5587690789.

The spelling of 6419909340 in words is "six billion, four hundred nineteen million, nine hundred nine thousand, three hundred forty".