1668703541 has 8 divisors (see below), whose sum is σ = 1694399520. Its totient is φ = 1643030928.

The previous prime is 1668703507. The next prime is 1668703573. The reversal of 1668703541 is 1453078661.

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 1668703541 - 2¹⁰ = 1668702517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668703241) by changing a digit.

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, 185690 + ... + 194468.

It is an arithmetic number, because the mean of its divisors is an integer number (211799940).

Almost surely, 2^1668703541 is an apocalyptic number.

It is an amenable number.

1668703541 is a deficient number, since it is larger than the sum of its proper divisors (25695979).

1668703541 is an equidigital number, since it uses as much as digits as its factorization.

1668703541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11683.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1668703541 is about 40849.7679430373. The cubic root of 1668703541 is about 1186.1139011815.

The spelling of 1668703541 in words is "one billion, six hundred sixty-eight million, seven hundred three thousand, five hundred forty-one".