1668518350 has 12 divisors (see below), whose sum is σ = 3103444224. Its totient is φ = 667407320.

The previous prime is 1668518347. The next prime is 1668518429. The reversal of 1668518350 is 538158661.

It is a junction number, because it is equal to n+sod(n) for n = 1668518297 and 1668518306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16685134 + ... + 16685233.

It is an arithmetic number, because the mean of its divisors is an integer number (258620352).

Almost surely, 2^1668518350 is an apocalyptic number.

1668518350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668518350 is a deficient number, since it is larger than the sum of its proper divisors (1434925874).

1668518350 is a wasteful number, since it uses less digits than its factorization.

1668518350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33370379 (or 33370374 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1668518350 is about 40847.5011475610. The cubic root of 1668518350 is about 1186.0700216586.

The spelling of 1668518350 in words is "one billion, six hundred sixty-eight million, five hundred eighteen thousand, three hundred fifty".