1668147354 has 12 divisors (see below), whose sum is σ = 3614319306. Its totient is φ = 556049112.

The previous prime is 1668147353. The next prime is 1668147373. The reversal of 1668147354 is 4537418661.

It can be written as a sum of positive squares in only one way, i.e., 1359618129 + 308529225 = 36873^2 + 17565^2 .

It is not an unprimeable number, because it can be changed into a prime (1668147353) 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 5 ways as a sum of consecutive naturals, for example, 46337409 + ... + 46337444.

Almost surely, 2^1668147354 is an apocalyptic number.

1668147354 is an abundant number, since it is smaller than the sum of its proper divisors (1946171952).

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

1668147354 is a wasteful number, since it uses less digits than its factorization.

1668147354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92674861 (or 92674858 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1668147354 is about 40842.9596625906. The cubic root of 1668147354 is about 1185.9821073620.

The spelling of 1668147354 in words is "one billion, six hundred sixty-eight million, one hundred forty-seven thousand, three hundred fifty-four".