1686827853 has 6 divisors (see below), whose sum is σ = 2436529134. Its totient is φ = 1124551896.

The previous prime is 1686827851. The next prime is 1686827887. The reversal of 1686827853 is 3587286861.

1686827853 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1341537129 + 345290724 = 36627^2 + 18582^2 .

It is not a de Polignac number, because 1686827853 - 2¹ = 1686827851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1686827853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686827851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93712650 + ... + 93712667.

It is an arithmetic number, because the mean of its divisors is an integer number (406088189).

Almost surely, 2^1686827853 is an apocalyptic number.

It is an amenable number.

1686827853 is a deficient number, since it is larger than the sum of its proper divisors (749701281).

1686827853 is a wasteful number, since it uses less digits than its factorization.

1686827853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187425323 (or 187425320 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 1686827853 is about 41071.0098853194. The cubic root of 1686827853 is about 1190.3926988210.

The spelling of 1686827853 in words is "one billion, six hundred eighty-six million, eight hundred twenty-seven thousand, eight hundred fifty-three".