1668355350 has 48 divisors (see below), whose sum is σ = 4380911568. Its totient is φ = 418723840.

The previous prime is 1668355321. The next prime is 1668355379. The reversal of 1668355350 is 535538661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1668355321) and next prime (1668355379).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324579 + ... + 329678.

It is an arithmetic number, because the mean of its divisors is an integer number (91268991).

Almost surely, 2^1668355350 is an apocalyptic number.

1668355350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668355350 is an abundant number, since it is smaller than the sum of its proper divisors (2712556218).

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

1668355350 is a wasteful number, since it uses less digits than its factorization.

1668355350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654289 (or 654284 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 1668355350 is about 40845.5058727395. The cubic root of 1668355350 is about 1186.0313974286.

The spelling of 1668355350 in words is "one billion, six hundred sixty-eight million, three hundred fifty-five thousand, three hundred fifty".