1685555053 has 8 divisors (see below), whose sum is σ = 2074529408. Its totient is φ = 1333625904.

The previous prime is 1685555051. The next prime is 1685555093. The reversal of 1685555053 is 3505555861.

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

It is not a de Polignac number, because 1685555053 - 2¹ = 1685555051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685555051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9261201 + ... + 9261382.

It is an arithmetic number, because the mean of its divisors is an integer number (259316176).

Almost surely, 2^1685555053 is an apocalyptic number.

1685555053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1685555053 is a deficient number, since it is larger than the sum of its proper divisors (388974355).

1685555053 is a wasteful number, since it uses less digits than its factorization.

1685555053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18522603.

The product of its (nonzero) digits is 450000, while the sum is 43.

The square root of 1685555053 is about 41055.5118467667. The cubic root of 1685555053 is about 1190.0932189292.

The spelling of 1685555053 in words is "one billion, six hundred eighty-five million, five hundred fifty-five thousand, fifty-three".