1686048346 has 4 divisors (see below), whose sum is σ = 2529072522. Its totient is φ = 843024172.

The previous prime is 1686048341. The next prime is 1686048379. The reversal of 1686048346 is 6438406861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1611139321 + 74909025 = 40139^2 + 8655^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1686048296 and 1686048305.

It is not an unprimeable number, because it can be changed into a prime (1686048341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421512085 + ... + 421512088.

Almost surely, 2^1686048346 is an apocalyptic number.

1686048346 is a deficient number, since it is larger than the sum of its proper divisors (843024176).

1686048346 is an equidigital number, since it uses as much as digits as its factorization.

1686048346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843024175.

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 1686048346 is about 41061.5190415552. The cubic root of 1686048346 is about 1190.2093048030.

The spelling of 1686048346 in words is "one billion, six hundred eighty-six million, forty-eight thousand, three hundred forty-six".