1680884018 has 16 divisors (see below), whose sum is σ = 2814505056. Its totient is φ = 746269440.

The previous prime is 1680884017. The next prime is 1680884021. The reversal of 1680884018 is 8104880861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1680884018.

It is not an unprimeable number, because it can be changed into a prime (1680884017) 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, 887471 + ... + 889362.

It is an arithmetic number, because the mean of its divisors is an integer number (175906566).

Almost surely, 2^1680884018 is an apocalyptic number.

1680884018 is a deficient number, since it is larger than the sum of its proper divisors (1133621038).

1680884018 is a wasteful number, since it uses less digits than its factorization.

1680884018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776889.

The product of its (nonzero) digits is 98304, while the sum is 44.

The square root of 1680884018 is about 40998.5855609678. The cubic root of 1680884018 is about 1188.9928672438.

The spelling of 1680884018 in words is "one billion, six hundred eighty million, eight hundred eighty-four thousand, eighteen".