1680031930 has 16 divisors (see below), whose sum is σ = 3094385184. Its totient is φ = 656384400.

The previous prime is 1680031909. The next prime is 1680031943. The reversal of 1680031930 is 391300861.

It is a junction number, because it is equal to n+sod(n) for n = 1680031892 and 1680031901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953096 + ... + 1953955.

It is an arithmetic number, because the mean of its divisors is an integer number (193399074).

Almost surely, 2^1680031930 is an apocalyptic number.

1680031930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680031930 is a deficient number, since it is larger than the sum of its proper divisors (1414353254).

1680031930 is a wasteful number, since it uses less digits than its factorization.

1680031930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907101.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1680031930 is about 40988.1925681043. The cubic root of 1680031930 is about 1188.7919218314.

The spelling of 1680031930 in words is "one billion, six hundred eighty million, thirty-one thousand, nine hundred thirty".