7830985986 has 16 divisors (see below), whose sum is σ = 17402191200. Its totient is φ = 2610328644.

The previous prime is 7830985969. The next prime is 7830986041. The reversal of 7830985986 is 6895890387.

7830985986 is a `hidden beast` number, since 7 + 8 + 30 + 9 + 8 + 598 + 6 = 666.

It is a super-2 number, since 2×7830985986² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72509076 + ... + 72509183.

It is an arithmetic number, because the mean of its divisors is an integer number (1087636950).

Almost surely, 2^7830985986 is an apocalyptic number.

7830985986 is an abundant number, since it is smaller than the sum of its proper divisors (9571205214).

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

7830985986 is a wasteful number, since it uses less digits than its factorization.

7830985986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145018270 (or 145018264 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The square root of 7830985986 is about 88492.8583898158. The cubic root of 7830985986 is about 1985.8151314305.

The spelling of 7830985986 in words is "seven billion, eight hundred thirty million, nine hundred eighty-five thousand, nine hundred eighty-six".