1680742072 has 16 divisors (see below), whose sum is σ = 3194562240. Its totient is φ = 828858816.

The previous prime is 1680742051. The next prime is 1680742087. The reversal of 1680742072 is 2702470861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438408 + ... + 1439575.

It is an arithmetic number, because the mean of its divisors is an integer number (199660140).

Almost surely, 2^1680742072 is an apocalyptic number.

It is an amenable number.

1680742072 is a deficient number, since it is larger than the sum of its proper divisors (1513820168).

1680742072 is a wasteful number, since it uses less digits than its factorization.

1680742072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878062 (or 2878058 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 1680742072 is about 40996.8544159183. The cubic root of 1680742072 is about 1188.9593972501.

The spelling of 1680742072 in words is "one billion, six hundred eighty million, seven hundred forty-two thousand, seventy-two".