1666350298 has 16 divisors (see below), whose sum is σ = 2542120776. Its totient is φ = 818994240.

The previous prime is 1666350289. The next prime is 1666350337. The reversal of 1666350298 is 8920536661.

It can be written as a sum of positive squares in 4 ways, for example, as 484572169 + 1181778129 = 22013^2 + 34377^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247140 + ... + 253792.

Almost surely, 2^1666350298 is an apocalyptic number.

1666350298 is a deficient number, since it is larger than the sum of its proper divisors (875770478).

1666350298 is a wasteful number, since it uses less digits than its factorization.

1666350298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8769.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1666350298 is about 40820.9541534737. The cubic root of 1666350298 is about 1185.5560774433.

The spelling of 1666350298 in words is "one billion, six hundred sixty-six million, three hundred fifty thousand, two hundred ninety-eight".