985780386 has 24 divisors (see below), whose sum is σ = 2143749504. Its totient is φ = 327379320.

The previous prime is 985780373. The next prime is 985780399. The reversal of 985780386 is 683087589.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (985780373) and next prime (985780399).

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 11 ways as a sum of consecutive naturals, for example, 96166 + ... + 105921.

It is an arithmetic number, because the mean of its divisors is an integer number (89322896).

Almost surely, 2^985780386 is an apocalyptic number.

985780386 is an abundant number, since it is smaller than the sum of its proper divisors (1157969118).

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

985780386 is a wasteful number, since it uses less digits than its factorization.

985780386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202366 (or 202363 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 985780386 is about 31397.1397741896. The cubic root of 985780386 is about 995.2374831066.

The spelling of 985780386 in words is "nine hundred eighty-five million, seven hundred eighty thousand, three hundred eighty-six".