1685320418 has 8 divisors (see below), whose sum is σ = 2529432912. Its totient is φ = 842176116.

The previous prime is 1685320409. The next prime is 1685320421. The reversal of 1685320418 is 8140235861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1685320418² = 5680609822655389448, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 237680 + ... + 244667.

It is an arithmetic number, because the mean of its divisors is an integer number (316179114).

Almost surely, 2^1685320418 is an apocalyptic number.

1685320418 is a deficient number, since it is larger than the sum of its proper divisors (844112494).

1685320418 is a wasteful number, since it uses less digits than its factorization.

1685320418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484096.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1685320418 is about 41052.6542138264. The cubic root of 1685320418 is about 1190.0379946911.

The spelling of 1685320418 in words is "one billion, six hundred eighty-five million, three hundred twenty thousand, four hundred eighteen".