1668534434 has 16 divisors (see below), whose sum is σ = 2860891008. Its totient is φ = 714949632.

The previous prime is 1668534407. The next prime is 1668534473. The reversal of 1668534434 is 4344358661.

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, 107042 + ... + 121634.

It is an arithmetic number, because the mean of its divisors is an integer number (178805688).

Almost surely, 2^1668534434 is an apocalyptic number.

1668534434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1668534434 is a deficient number, since it is larger than the sum of its proper divisors (1192356574).

1668534434 is a wasteful number, since it uses less digits than its factorization.

1668534434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22769.

The product of its digits is 829440, while the sum is 44.

The square root of 1668534434 is about 40847.6980257150. The cubic root of 1668534434 is about 1186.0738327622.

The spelling of 1668534434 in words is "one billion, six hundred sixty-eight million, five hundred thirty-four thousand, four hundred thirty-four".