1866466456 has 8 divisors (see below), whose sum is σ = 3499624620. Its totient is φ = 933233224.

The previous prime is 1866466439. The next prime is 1866466457. The reversal of 1866466456 is 6546646681.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866466457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116654146 + ... + 116654161.

Almost surely, 2^1866466456 is an apocalyptic number.

It is an amenable number.

1866466456 is a deficient number, since it is larger than the sum of its proper divisors (1633158164).

1866466456 is a wasteful number, since it uses less digits than its factorization.

1866466456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233308313 (or 233308309 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 52.

The square root of 1866466456 is about 43202.6209390125. The cubic root of 1866466456 is about 1231.2324782445.

The spelling of 1866466456 in words is "one billion, eight hundred sixty-six million, four hundred sixty-six thousand, four hundred fifty-six".