1866066227 has 8 divisors (see below), whose sum is σ = 1910371056. Its totient is φ = 1821802752.

The previous prime is 1866066211. The next prime is 1866066253. The reversal of 1866066227 is 7226606681.

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 1866066227 - 2⁴ = 1866066211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1866066287) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 93083 + ... + 111339.

It is an arithmetic number, because the mean of its divisors is an integer number (238796382).

Almost surely, 2^1866066227 is an apocalyptic number.

1866066227 is a deficient number, since it is larger than the sum of its proper divisors (44304829).

1866066227 is a wasteful number, since it uses less digits than its factorization.

1866066227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20677.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 1866066227 is about 43197.9886916046. The cubic root of 1866066227 is about 1231.1444669887.

The spelling of 1866066227 in words is "one billion, eight hundred sixty-six million, sixty-six thousand, two hundred twenty-seven".