1687313508 has 48 divisors (see below), whose sum is σ = 4163228160. Its totient is φ = 531014400.

The previous prime is 1687313443. The next prime is 1687313527. The reversal of 1687313508 is 8053137861.

It is a self number, because there is not a number n which added to its sum of digits gives 1687313508.

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 15 ways as a sum of consecutive naturals, for example, 40063 + ... + 70566.

It is an arithmetic number, because the mean of its divisors is an integer number (86733920).

Almost surely, 2^1687313508 is an apocalyptic number.

It is an amenable number.

1687313508 is an abundant number, since it is smaller than the sum of its proper divisors (2475914652).

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

1687313508 is a wasteful number, since it uses less digits than its factorization.

1687313508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110708 (or 110706 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1687313508 is about 41076.9218418323. The cubic root of 1687313508 is about 1190.5069299387.

It can be divided in two parts, 16873 and 13508, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 1687313508 in words is "one billion, six hundred eighty-seven million, three hundred thirteen thousand, five hundred eight".