4548491640 has 432 divisors, whose sum is σ = 18910349640. Its totient is φ = 944697600.

The previous prime is 4548491621. The next prime is 4548491663. The reversal of 4548491640 is 461948454.

4548491640 is a `hidden beast` number, since 4 + 5 + 484 + 9 + 164 + 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 107 ways as a sum of consecutive naturals, for example, 2133375 + ... + 2135505.

Almost surely, 2^4548491640 is an apocalyptic number.

4548491640 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 4548491640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9455174820).

4548491640 is an abundant number, since it is smaller than the sum of its proper divisors (14361858000).

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

4548491640 is a wasteful number, since it uses less digits than its factorization.

4548491640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184 (or 2159 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 4548491640 is about 67442.5061811911. The cubic root of 4548491640 is about 1656.8726671914.

The spelling of 4548491640 in words is "four billion, five hundred forty-eight million, four hundred ninety-one thousand, six hundred forty".