1685018518350 has 48 divisors (see below), whose sum is σ = 4178926928880. Its totient is φ = 449329561600.

The previous prime is 1685018518327. The next prime is 1685018518357. The reversal of 1685018518350 is 538158105861.

It is a junction number, because it is equal to n+sod(n) for n = 1685018518293 and 1685018518302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685018518357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12528460 + ... + 12662240.

It is an arithmetic number, because the mean of its divisors is an integer number (87060977685).

Almost surely, 2^{1685018518350} is an apocalyptic number.

1685018518350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1685018518350 is an abundant number, since it is smaller than the sum of its proper divisors (2493908410530).

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

1685018518350 is a wasteful number, since it uses less digits than its factorization.

1685018518350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217765 (or 217760 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 1685018518350 in words is "one trillion, six hundred eighty-five billion, eighteen million, five hundred eighteen thousand, three hundred fifty".