1489765666 has 4 divisors (see below), whose sum is σ = 2234648502. Its totient is φ = 744882832.

The previous prime is 1489765643. The next prime is 1489765681. The reversal of 1489765666 is 6665679841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1039095225 + 450670441 = 32235^2 + 21229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1489765666.

It is an unprimeable number.

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, 372441415 + ... + 372441418.

Almost surely, 2^1489765666 is an apocalyptic number.

1489765666 is a deficient number, since it is larger than the sum of its proper divisors (744882836).

1489765666 is an equidigital number, since it uses as much as digits as its factorization.

1489765666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744882835.

The product of its digits is 13063680, while the sum is 58.

The square root of 1489765666 is about 38597.4826381203. The cubic root of 1489765666 is about 1142.1048795279.

The spelling of 1489765666 in words is "one billion, four hundred eighty-nine million, seven hundred sixty-five thousand, six hundred sixty-six".