1666668348 has 36 divisors (see below), whose sum is σ = 4219288528. Its totient is φ = 554722560.

The previous prime is 1666668323. The next prime is 1666668359. The reversal of 1666668348 is 8438666661.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1666668294 and 1666668303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10168 + ... + 58623.

Almost surely, 2^1666668348 is an apocalyptic number.

1666668348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1666668348 is an abundant number, since it is smaller than the sum of its proper divisors (2552620180).

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

1666668348 is a wasteful number, since it uses less digits than its factorization.

1666668348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69474 (or 69469 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 1666668348 is about 40824.8496384249. The cubic root of 1666668348 is about 1185.6315001848.

The spelling of 1666668348 in words is "one billion, six hundred sixty-six million, six hundred sixty-eight thousand, three hundred forty-eight".