1686112351 has 16 divisors (see below), whose sum is σ = 2169980928. Its totient is φ = 1271469600.

The previous prime is 1686112339. The next prime is 1686112367. The reversal of 1686112351 is 1532116861.

It is a cyclic number.

It is not a de Polignac number, because 1686112351 - 2⁵ = 1686112319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686112391) 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 in 15 ways as a sum of consecutive naturals, for example, 350800 + ... + 355573.

It is an arithmetic number, because the mean of its divisors is an integer number (135623808).

Almost surely, 2^1686112351 is an apocalyptic number.

1686112351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1686112351 is a deficient number, since it is larger than the sum of its proper divisors (483868577).

1686112351 is a wasteful number, since it uses less digits than its factorization.

1686112351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706422.

The product of its digits is 8640, while the sum is 34.

The square root of 1686112351 is about 41062.2984135082. The cubic root of 1686112351 is about 1190.2243653404.

The spelling of 1686112351 in words is "one billion, six hundred eighty-six million, one hundred twelve thousand, three hundred fifty-one".