1866685055 has 8 divisors (see below), whose sum is σ = 2250068352. Its totient is φ = 1486650528.

The previous prime is 1866685033. The next prime is 1866685061. The reversal of 1866685055 is 5505866681.

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

It is a cyclic number.

It is not a de Polignac number, because 1866685055 - 2¹⁶ = 1866619519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1866684994 and 1866685012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835964 + ... + 838193.

It is an arithmetic number, because the mean of its divisors is an integer number (281258544).

Almost surely, 2^1866685055 is an apocalyptic number.

1866685055 is a deficient number, since it is larger than the sum of its proper divisors (383383297).

1866685055 is a wasteful number, since it uses less digits than its factorization.

1866685055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674385.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The square root of 1866685055 is about 43205.1507924692. The cubic root of 1866685055 is about 1231.2805433429.

The spelling of 1866685055 in words is "one billion, eight hundred sixty-six million, six hundred eighty-five thousand, fifty-five".