6433873920 has 336 divisors, whose sum is σ = 23063069952. Its totient is φ = 1657405440.

The previous prime is 6433873903. The next prime is 6433873933. The reversal of 6433873920 is 293783346.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11427559 + ... + 11428121.

Almost surely, 2^6433873920 is an apocalyptic number.

6433873920 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 6433873920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11531534976).

6433873920 is an abundant number, since it is smaller than the sum of its proper divisors (16629196032).

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

6433873920 is a wasteful number, since it uses less digits than its factorization.

6433873920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 6433873920 is about 80211.4326015936. The cubic root of 6433873920 is about 1859.9053715299.

The spelling of 6433873920 in words is "six billion, four hundred thirty-three million, eight hundred seventy-three thousand, nine hundred twenty".