1666315011 has 8 divisors (see below), whose sum is σ = 2222098704. Its totient is φ = 1110704000.

The previous prime is 1666314997. The next prime is 1666315039. The reversal of 1666315011 is 1105136661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1666315011 - 2¹³ = 1666306819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1666315011.

It is not an unprimeable number, because it can be changed into a prime (1666315051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18666 + ... + 60671.

It is an arithmetic number, because the mean of its divisors is an integer number (277762338).

Almost surely, 2^1666315011 is an apocalyptic number.

1666315011 is a deficient number, since it is larger than the sum of its proper divisors (555783693).

1666315011 is an equidigital number, since it uses as much as digits as its factorization.

1666315011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86341.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1666315011 is about 40820.5219344388. The cubic root of 1666315011 is about 1185.5477088522.

The spelling of 1666315011 in words is "one billion, six hundred sixty-six million, three hundred fifteen thousand, eleven".