1000481666 has 4 divisors (see below), whose sum is σ = 1500722502. Its totient is φ = 500240832.

The previous prime is 1000481641. The next prime is 1000481681. The reversal of 1000481666 is 6661840001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6661840001 = 23021 ⋅289381.

It can be written as a sum of positive squares in only one way, i.e., 886312441 + 114169225 = 29771^2 + 10685^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 250120415 + ... + 250120418.

Almost surely, 2^1000481666 is an apocalyptic number.

1000481666 is a deficient number, since it is larger than the sum of its proper divisors (500240836).

1000481666 is an equidigital number, since it uses as much as digits as its factorization.

1000481666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500240835.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1000481666 is about 31630.3914929929. The cubic root of 1000481666 is about 1000.1605295622.

The spelling of 1000481666 in words is "one billion, four hundred eighty-one thousand, six hundred sixty-six".