1668324552 has 16 divisors (see below), whose sum is σ = 4170811440. Its totient is φ = 556108176.

The previous prime is 1668324523. The next prime is 1668324577. The reversal of 1668324552 is 2554238661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34756738 + ... + 34756785.

It is an arithmetic number, because the mean of its divisors is an integer number (260675715).

Almost surely, 2^1668324552 is an apocalyptic number.

1668324552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1668324552 is an abundant number, since it is smaller than the sum of its proper divisors (2502486888).

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

1668324552 is a wasteful number, since it uses less digits than its factorization.

1668324552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69513532 (or 69513528 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 1668324552 is about 40845.1288650189. The cubic root of 1668324552 is about 1186.0240992992.

The spelling of 1668324552 in words is "one billion, six hundred sixty-eight million, three hundred twenty-four thousand, five hundred fifty-two".