1686508132 has 6 divisors (see below), whose sum is σ = 2951389238. Its totient is φ = 843254064.

The previous prime is 1686508127. The next prime is 1686508133. The reversal of 1686508132 is 2318056861.

It can be written as a sum of positive squares in only one way, i.e., 1686252096 + 256036 = 41064^2 + 506^2 .

It is not an unprimeable number, because it can be changed into a prime (1686508133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210813513 + ... + 210813520.

Almost surely, 2^1686508132 is an apocalyptic number.

It is an amenable number.

1686508132 is a deficient number, since it is larger than the sum of its proper divisors (1264881106).

1686508132 is a wasteful number, since it uses less digits than its factorization.

1686508132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421627037 (or 421627035 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1686508132 is about 41067.1174055351. The cubic root of 1686508132 is about 1190.3174851407.

The spelling of 1686508132 in words is "one billion, six hundred eighty-six million, five hundred eight thousand, one hundred thirty-two".