1685018518356 has 96 divisors (see below), whose sum is σ = 4119300476928. Its totient is φ = 535454542080.

The previous prime is 1685018518327. The next prime is 1685018518357. The reversal of 1685018518356 is 6538158105861.

It is a junction number, because it is equal to n+sod(n) for n = 1685018518296 and 1685018518305.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10635336 + ... + 10792608.

It is an arithmetic number, because the mean of its divisors is an integer number (42909379968).

Almost surely, 2^{1685018518356} is an apocalyptic number.

It is an amenable number.

1685018518356 is an abundant number, since it is smaller than the sum of its proper divisors (2434281958572).

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

1685018518356 is a wasteful number, since it uses less digits than its factorization.

1685018518356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157741 (or 157739 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 57.

The spelling of 1685018518356 in words is "one trillion, six hundred eighty-five billion, eighteen million, five hundred eighteen thousand, three hundred fifty-six".