1668286734 has 16 divisors (see below), whose sum is σ = 3386373888. Its totient is φ = 547795512.

The previous prime is 1668286733. The next prime is 1668286751. The reversal of 1668286734 is 4376828661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668286733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2074582 + ... + 2075385.

It is an arithmetic number, because the mean of its divisors is an integer number (211648368).

Almost surely, 2^1668286734 is an apocalyptic number.

1668286734 is an abundant number, since it is smaller than the sum of its proper divisors (1718087154).

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

1668286734 is a wasteful number, since it uses less digits than its factorization.

1668286734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150039.

The product of its digits is 2322432, while the sum is 51.

The square root of 1668286734 is about 40844.6659185750. The cubic root of 1668286734 is about 1186.0151375341.

The spelling of 1668286734 in words is "one billion, six hundred sixty-eight million, two hundred eighty-six thousand, seven hundred thirty-four".