45189866 has 16 divisors (see below), whose sum is σ = 71789760. Its totient is φ = 21274560.

The previous prime is 45189863. The next prime is 45189877. The reversal of 45189866 is 66898154.

45189866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45189866.

It is not an unprimeable number, because it can be changed into a prime (45189863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786 + ... + 9906.

It is an arithmetic number, because the mean of its divisors is an integer number (4486860).

Almost surely, 2^45189866 is an apocalyptic number.

45189866 is a deficient number, since it is larger than the sum of its proper divisors (26599894).

45189866 is a wasteful number, since it uses less digits than its factorization.

45189866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309.

The product of its digits is 414720, while the sum is 47.

The square root of 45189866 is about 6722.3408125444. The cubic root of 45189866 is about 356.1888752829.

The spelling of 45189866 in words is "forty-five million, one hundred eighty-nine thousand, eight hundred sixty-six".