4989451500 has 192 divisors, whose sum is σ = 17611776000. Its totient is φ = 1209528000.

The previous prime is 4989451483. The next prime is 4989451501. The reversal of 4989451500 is 51549894.

4989451500 is a `hidden beast` number, since 4 + 9 + 8 + 94 + 51 + 500 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989451501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131701 + ... + 165299.

It is an arithmetic number, because the mean of its divisors is an integer number (91728000).

Almost surely, 2^4989451500 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 4989451500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8805888000).

4989451500 is an abundant number, since it is smaller than the sum of its proper divisors (12622324500).

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

4989451500 is a wasteful number, since it uses less digits than its factorization.

4989451500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638 (or 33620 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 4989451500 is about 70636.0495781014. The cubic root of 4989451500 is about 1708.7725879527.

The spelling of 4989451500 in words is "four billion, nine hundred eighty-nine million, four hundred fifty-one thousand, five hundred".