1686190055 has 36 divisors (see below), whose sum is σ = 2347285080. Its totient is φ = 1158743520.

The previous prime is 1686190013. The next prime is 1686190061. The reversal of 1686190055 is 5500916861.

It is not a de Polignac number, because 1686190055 - 2²⁴ = 1669412839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1686189994 and 1686190021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4402394 + ... + 4402776.

Almost surely, 2^1686190055 is an apocalyptic number.

1686190055 is a deficient number, since it is larger than the sum of its proper divisors (661095025).

1686190055 is an equidigital number, since it uses as much as digits as its factorization.

1686190055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 1686190055 is about 41063.2445746802. The cubic root of 1686190055 is about 1190.2426487747.

The spelling of 1686190055 in words is "one billion, six hundred eighty-six million, one hundred ninety thousand, fifty-five".