1668883372 has 48 divisors (see below), whose sum is σ = 3237794560. Its totient is φ = 747677952.

The previous prime is 1668883367. The next prime is 1668883397. The reversal of 1668883372 is 2733888661.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167154 + ... + 1168582.

Almost surely, 2^1668883372 is an apocalyptic number.

It is an amenable number.

1668883372 is a deficient number, since it is larger than the sum of its proper divisors (1568911188).

1668883372 is a wasteful number, since it uses less digits than its factorization.

1668883372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2088 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 1668883372 is about 40851.9690100734. The cubic root of 1668883372 is about 1186.1565075886.

The spelling of 1668883372 in words is "one billion, six hundred sixty-eight million, eight hundred eighty-three thousand, three hundred seventy-two".