1866034085 has 32 divisors (see below), whose sum is σ = 2318177664. Its totient is φ = 1441440000.

The previous prime is 1866034069. The next prime is 1866034117. The reversal of 1866034085 is 5804306681.

It is not a de Polignac number, because 1866034085 - 2⁴ = 1866034069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4432175 + ... + 4432595.

It is an arithmetic number, because the mean of its divisors is an integer number (72443052).

Almost surely, 2^1866034085 is an apocalyptic number.

It is an amenable number.

1866034085 is a deficient number, since it is larger than the sum of its proper divisors (452143579).

1866034085 is a wasteful number, since it uses less digits than its factorization.

1866034085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1866034085 is about 43197.6166587926. The cubic root of 1866034085 is about 1231.1373983449.

The spelling of 1866034085 in words is "one billion, eight hundred sixty-six million, thirty-four thousand, eighty-five".