4643921880 has 192 divisors, whose sum is σ = 16374627360. Its totient is φ = 1134618624.

The previous prime is 4643921839. The next prime is 4643921899. The reversal of 4643921880 is 881293464.

It is a happy number.

4643921880 is a `hidden beast` number, since 464 + 3 + 9 + 2 + 188 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 637539 + ... + 644781.

Almost surely, 2^4643921880 is an apocalyptic number.

4643921880 is a gapful number since it is divisible by the number (40) 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 4643921880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8187313680).

4643921880 is an abundant number, since it is smaller than the sum of its proper divisors (11730705480).

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

4643921880 is a wasteful number, since it uses less digits than its factorization.

4643921880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410 (or 7403 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 4643921880 is about 68146.3269736528. The cubic root of 4643921880 is about 1668.3799748526.

The spelling of 4643921880 in words is "four billion, six hundred forty-three million, nine hundred twenty-one thousand, eight hundred eighty".