1668382235 has 16 divisors (see below), whose sum is σ = 2192611680. Its totient is φ = 1211151360.

The previous prime is 1668382213. The next prime is 1668382237. The reversal of 1668382235 is 5322838661.

It is a de Polignac number, because none of the positive numbers 2^k-1668382235 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668382237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213686 + ... + 221355.

It is an arithmetic number, because the mean of its divisors is an integer number (137038230).

Almost surely, 2^1668382235 is an apocalyptic number.

1668382235 is a deficient number, since it is larger than the sum of its proper divisors (524229445).

1668382235 is a wasteful number, since it uses less digits than its factorization.

1668382235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435118.

The product of its digits is 414720, while the sum is 44.

The square root of 1668382235 is about 40845.8349773878. The cubic root of 1668382235 is about 1186.0377682302.

The spelling of 1668382235 in words is "one billion, six hundred sixty-eight million, three hundred eighty-two thousand, two hundred thirty-five".