1668733854 has 16 divisors (see below), whose sum is σ = 3338722560. Its totient is φ = 556035480.

The previous prime is 1668733849. The next prime is 1668733877. The reversal of 1668733854 is 4583378661.

It is a junction number, because it is equal to n+sod(n) for n = 1668733797 and 1668733806.

It is a congruent number.

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, 34534 + ... + 67305.

It is an arithmetic number, because the mean of its divisors is an integer number (208670160).

Almost surely, 2^1668733854 is an apocalyptic number.

1668733854 is an abundant number, since it is smaller than the sum of its proper divisors (1669988706).

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

1668733854 is a wasteful number, since it uses less digits than its factorization.

1668733854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104575.

The product of its digits is 2903040, while the sum is 51.

The square root of 1668733854 is about 40850.1389716118. The cubic root of 1668733854 is about 1186.1210832947.

The spelling of 1668733854 in words is "one billion, six hundred sixty-eight million, seven hundred thirty-three thousand, eight hundred fifty-four".