1666350482 has 4 divisors (see below), whose sum is σ = 2499525726. Its totient is φ = 833175240.

The previous prime is 1666350473. The next prime is 1666350509. The reversal of 1666350482 is 2840536661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2840536661 = 313 ⋅9075197.

It can be written as a sum of positive squares in only one way, i.e., 1604082601 + 62267881 = 40051^2 + 7891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416587619 + ... + 416587622.

Almost surely, 2^1666350482 is an apocalyptic number.

1666350482 is a deficient number, since it is larger than the sum of its proper divisors (833175244).

1666350482 is an equidigital number, since it uses as much as digits as its factorization.

1666350482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833175243.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1666350482 is about 40820.9564072181. The cubic root of 1666350482 is about 1185.5561210800.

The spelling of 1666350482 in words is "one billion, six hundred sixty-six million, three hundred fifty thousand, four hundred eighty-two".