1680937518 has 32 divisors (see below), whose sum is σ = 3627937152. Its totient is φ = 516146400.

The previous prime is 1680937507. The next prime is 1680937519. The reversal of 1680937518 is 8157390861.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680937519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16353 + ... + 60243.

It is an arithmetic number, because the mean of its divisors is an integer number (113373036).

Almost surely, 2^1680937518 is an apocalyptic number.

1680937518 is an abundant number, since it is smaller than the sum of its proper divisors (1946999634).

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

1680937518 is a wasteful number, since it uses less digits than its factorization.

1680937518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44400.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1680937518 is about 40999.2380173095. The cubic root of 1680937518 is about 1189.0054817258.

The spelling of 1680937518 in words is "one billion, six hundred eighty million, nine hundred thirty-seven thousand, five hundred eighteen".