1680968018 has 16 divisors (see below), whose sum is σ = 2633371776. Its totient is φ = 803241120.

The previous prime is 1680968017. The next prime is 1680968077. The reversal of 1680968018 is 8108690861.

It is not an unprimeable number, because it can be changed into a prime (1680968017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39563 + ... + 70193.

It is an arithmetic number, because the mean of its divisors is an integer number (164585736).

Almost surely, 2^1680968018 is an apocalyptic number.

1680968018 is a deficient number, since it is larger than the sum of its proper divisors (952403758).

1680968018 is a wasteful number, since it uses less digits than its factorization.

1680968018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31849.

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 1680968018 is about 40999.6099737546. The cubic root of 1680968018 is about 1189.0126730397.

The spelling of 1680968018 in words is "one billion, six hundred eighty million, nine hundred sixty-eight thousand, eighteen".