1668670000 has 50 divisors (see below), whose sum is σ = 4040041148. Its totient is φ = 667464000.

The previous prime is 1668669973. The next prime is 1668670007. The reversal of 1668670000 is 768661.

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (1668670007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 73434 + ... + 93433.

Almost surely, 2^1668670000 is an apocalyptic number.

1668670000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1668670000 is an abundant number, since it is smaller than the sum of its proper divisors (2371371148).

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

1668670000 is an equidigital number, since it uses as much as digits as its factorization.

1668670000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166895 (or 166874 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1668670000 is about 40849.3574000865. The cubic root of 1668670000 is about 1186.1059541512.

The spelling of 1668670000 in words is "one billion, six hundred sixty-eight million, six hundred seventy thousand".