1668368372 has 24 divisors (see below), whose sum is σ = 3372425280. Its totient is φ = 713740160.

The previous prime is 1668368371. The next prime is 1668368453. The reversal of 1668368372 is 2738638661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668368372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668368371) 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, 1114472 + ... + 1115967.

It is an arithmetic number, because the mean of its divisors is an integer number (140517720).

Almost surely, 2^1668368372 is an apocalyptic number.

It is an amenable number.

1668368372 is an abundant number, since it is smaller than the sum of its proper divisors (1704056908).

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

1668368372 is a wasteful number, since it uses less digits than its factorization.

1668368372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230471 (or 2230469 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 1668368372 is about 40845.6652779704. The cubic root of 1668368372 is about 1186.0344831942.

The spelling of 1668368372 in words is "one billion, six hundred sixty-eight million, three hundred sixty-eight thousand, three hundred seventy-two".