1444654666 has 32 divisors (see below), whose sum is σ = 2676256128. Its totient is φ = 569540160.

The previous prime is 1444654663. The next prime is 1444654697. The reversal of 1444654666 is 6664564441.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1444654663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39781 + ... + 66871.

It is an arithmetic number, because the mean of its divisors is an integer number (83633004).

Almost surely, 2^1444654666 is an apocalyptic number.

1444654666 is a deficient number, since it is larger than the sum of its proper divisors (1231601462).

1444654666 is a wasteful number, since it uses less digits than its factorization.

1444654666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27406.

The product of its digits is 1658880, while the sum is 46.

The square root of 1444654666 is about 38008.6130502022. The cubic root of 1444654666 is about 1130.4586505813.

The spelling of 1444654666 in words is "one billion, four hundred forty-four million, six hundred fifty-four thousand, six hundred sixty-six".