1668386754 has 16 divisors (see below), whose sum is σ = 3707526240. Its totient is φ = 556128900.

The previous prime is 1668386743. The next prime is 1668386773. The reversal of 1668386754 is 4576838661.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 30896051 = 1668386754 / (1 + 6 + 6 + 8 + 3 + 8 + 6 + 7 + 5 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1668386754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15447972 + ... + 15448079.

It is an arithmetic number, because the mean of its divisors is an integer number (231720390).

Almost surely, 2^1668386754 is an apocalyptic number.

1668386754 is an abundant number, since it is smaller than the sum of its proper divisors (2039139486).

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

1668386754 is a wasteful number, since it uses less digits than its factorization.

1668386754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30896062 (or 30896056 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 1668386754 is about 40845.8902951080. The cubic root of 1668386754 is about 1186.0388390679.

The spelling of 1668386754 in words is "one billion, six hundred sixty-eight million, three hundred eighty-six thousand, seven hundred fifty-four".