4455991540 has 192 divisors, whose sum is σ = 12740313600. Its totient is φ = 1264066560.

The previous prime is 4455991531. The next prime is 4455991543. The reversal of 4455991540 is 451995544.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4455991543) 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 63 ways as a sum of consecutive naturals, for example, 1459936 + ... + 1462984.

It is an arithmetic number, because the mean of its divisors is an integer number (66355800).

Almost surely, 2^4455991540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4455991540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6370156800).

4455991540 is an abundant number, since it is smaller than the sum of its proper divisors (8284322060).

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

4455991540 is a wasteful number, since it uses less digits than its factorization.

4455991540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162 (or 3160 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The square root of 4455991540 is about 66753.2137054090. The cubic root of 4455991540 is about 1645.5640308626.

The spelling of 4455991540 in words is "four billion, four hundred fifty-five million, nine hundred ninety-one thousand, five hundred forty".