1668672192 has 112 divisors (see below), whose sum is σ = 4845295872. Its totient is φ = 502625280.

The previous prime is 1668672167. The next prime is 1668672199. The reversal of 1668672192 is 2912768661.

1668672192 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1668672199) 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, 363093 + ... + 367659.

Almost surely, 2^1668672192 is an apocalyptic number.

1668672192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668672192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2422647936).

1668672192 is an abundant number, since it is smaller than the sum of its proper divisors (3176623680).

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

1668672192 is a wasteful number, since it uses less digits than its factorization.

1668672192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766 (or 4756 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 1668672192 is about 40849.3842303651. The cubic root of 1668672192 is about 1186.1064735155.

The spelling of 1668672192 in words is "one billion, six hundred sixty-eight million, six hundred seventy-two thousand, one hundred ninety-two".