1668445482 has 64 divisors (see below), whose sum is σ = 3787849728. Its totient is φ = 485352000.

The previous prime is 1668445463. The next prime is 1668445489. The reversal of 1668445482 is 2845448661.

It is not an unprimeable number, because it can be changed into a prime (1668445489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256632 + ... + 263052.

It is an arithmetic number, because the mean of its divisors is an integer number (59185152).

Almost surely, 2^1668445482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668445482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1893924864).

1668445482 is an abundant number, since it is smaller than the sum of its proper divisors (2119404246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668445482 is a wasteful number, since it uses less digits than its factorization.

1668445482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6595.

The product of its digits is 1474560, while the sum is 48.

The square root of 1668445482 is about 40846.6091860757. The cubic root of 1668445482 is about 1186.0527552800.

The spelling of 1668445482 in words is "one billion, six hundred sixty-eight million, four hundred forty-five thousand, four hundred eighty-two".