1985548464 has 200 divisors, whose sum is σ = 6034488768. Its totient is φ = 629544960.

The previous prime is 1985548459. The next prime is 1985548489. The reversal of 1985548464 is 4648455891.

1985548464 is a `hidden beast` number, since 1 + 9 + 8 + 554 + 84 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1985548464.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2253304 + ... + 2254184.

Almost surely, 2^1985548464 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 1985548464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3017244384).

1985548464 is an abundant number, since it is smaller than the sum of its proper divisors (4048940304).

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

1985548464 is a wasteful number, since it uses less digits than its factorization.

1985548464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 970 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 1985548464 is about 44559.4935339261. The cubic root of 1985548464 is about 1256.8790788266.

The spelling of 1985548464 in words is "one billion, nine hundred eighty-five million, five hundred forty-eight thousand, four hundred sixty-four".