1668058356 has 12 divisors (see below), whose sum is σ = 3892136192. Its totient is φ = 556019448.

The previous prime is 1668058351. The next prime is 1668058361. The reversal of 1668058356 is 6538508661.

It is an interprime number because it is at equal distance from previous prime (1668058351) and next prime (1668058361).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668058351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69502420 + ... + 69502443.

Almost surely, 2^1668058356 is an apocalyptic number.

It is an amenable number.

1668058356 is an abundant number, since it is smaller than the sum of its proper divisors (2224077836).

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

1668058356 is a wasteful number, since it uses less digits than its factorization.

1668058356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139004870 (or 139004868 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 1668058356 is about 40841.8701334794. The cubic root of 1668058356 is about 1185.9610157175.

The spelling of 1668058356 in words is "one billion, six hundred sixty-eight million, fifty-eight thousand, three hundred fifty-six".