985117830 has 32 divisors (see below), whose sum is σ = 2467079424. Its totient is φ = 251276256.

The previous prime is 985117823. The next prime is 985117843. The reversal of 985117830 is 38711589.

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 15 ways as a sum of consecutive naturals, for example, 713164 + ... + 714543.

It is an arithmetic number, because the mean of its divisors is an integer number (77096232).

Almost surely, 2^985117830 is an apocalyptic number.

985117830 is an abundant number, since it is smaller than the sum of its proper divisors (1481961594).

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

985117830 is a wasteful number, since it uses less digits than its factorization.

985117830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427740.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 985117830 is about 31386.5867848035. The cubic root of 985117830 is about 995.0144623875.

The spelling of 985117830 in words is "nine hundred eighty-five million, one hundred seventeen thousand, eight hundred thirty".