1668453472 has 24 divisors (see below), whose sum is σ = 3754020816. Its totient is φ = 715051392.

The previous prime is 1668453463. The next prime is 1668453539. The reversal of 1668453472 is 2743548661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3724003 + ... + 3724450.

It is an arithmetic number, because the mean of its divisors is an integer number (156417534).

Almost surely, 2^1668453472 is an apocalyptic number.

It is an amenable number.

1668453472 is an abundant number, since it is smaller than the sum of its proper divisors (2085567344).

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

1668453472 is an equidigital number, since it uses as much as digits as its factorization.

1668453472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448470 (or 7448462 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 1668453472 is about 40846.7069908946. The cubic root of 1668453472 is about 1186.0546485686.

The spelling of 1668453472 in words is "one billion, six hundred sixty-eight million, four hundred fifty-three thousand, four hundred seventy-two".