1985873532 has 24 divisors (see below), whose sum is σ = 4663223376. Its totient is φ = 657740928.

The previous prime is 1985873489. The next prime is 1985873557. The reversal of 1985873532 is 2353785891.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 525153 + ... + 528920.

It is an arithmetic number, because the mean of its divisors is an integer number (194300974).

Almost surely, 2^1985873532 is an apocalyptic number.

1985873532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1985873532 is an abundant number, since it is smaller than the sum of its proper divisors (2677349844).

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

1985873532 is a wasteful number, since it uses less digits than its factorization.

1985873532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054237 (or 1054235 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The square root of 1985873532 is about 44563.1409575223. The cubic root of 1985873532 is about 1256.9476658998.

The spelling of 1985873532 in words is "one billion, nine hundred eighty-five million, eight hundred seventy-three thousand, five hundred thirty-two".