1985524480 has 36 divisors (see below), whose sum is σ = 4755954672. Its totient is φ = 794209280.

The previous prime is 1985524433. The next prime is 1985524481. The reversal of 1985524480 is 844255891.

It is a self number, because there is not a number n which added to its sum of digits gives 1985524480.

It is not an unprimeable number, because it can be changed into a prime (1985524481) 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 3 ways as a sum of consecutive naturals, for example, 774316 + ... + 776875.

It is an arithmetic number, because the mean of its divisors is an integer number (132109852).

Almost surely, 2^1985524480 is an apocalyptic number.

1985524480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1985524480 is an abundant number, since it is smaller than the sum of its proper divisors (2770430192).

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

1985524480 is an equidigital number, since it uses as much as digits as its factorization.

1985524480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551212 (or 1551198 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 1985524480 is about 44559.2244097673. The cubic root of 1985524480 is about 1256.8740180739.

The spelling of 1985524480 in words is "one billion, nine hundred eighty-five million, five hundred twenty-four thousand, four hundred eighty".