985361820 has 48 divisors (see below), whose sum is σ = 2921311008. Its totient is φ = 247306240.

The previous prime is 985361789. The next prime is 985361843. The reversal of 985361820 is 28163589.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482001 + ... + 484040.

It is an arithmetic number, because the mean of its divisors is an integer number (60860646).

Almost surely, 2^985361820 is an apocalyptic number.

It is an amenable number.

985361820 is an abundant number, since it is smaller than the sum of its proper divisors (1935949188).

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

985361820 is a wasteful number, since it uses less digits than its factorization.

985361820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966070 (or 966068 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 985361820 is about 31390.4733956020. The cubic root of 985361820 is about 995.0966026591.

The spelling of 985361820 in words is "nine hundred eighty-five million, three hundred sixty-one thousand, eight hundred twenty".