1686870084 has 192 divisors, whose sum is σ = 4606156800. Its totient is φ = 476928000.

The previous prime is 1686870049. The next prime is 1686870109. The reversal of 1686870084 is 4800786861.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12135687 + ... + 12135825.

It is an arithmetic number, because the mean of its divisors is an integer number (23990400).

Almost surely, 2^1686870084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1686870084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303078400).

1686870084 is an abundant number, since it is smaller than the sum of its proper divisors (2919286716).

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

1686870084 is a wasteful number, since it uses less digits than its factorization.

1686870084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 1686870084 is about 41071.5240038643. The cubic root of 1686870084 is about 1190.4026328627.

The spelling of 1686870084 in words is "one billion, six hundred eighty-six million, eight hundred seventy thousand, eighty-four".