1680031090 has 16 divisors (see below), whose sum is σ = 3155537088. Its totient is φ = 642794416.

The previous prime is 1680031063. The next prime is 1680031109. The reversal of 1680031090 is 901300861.

It is a happy number.

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, 3652012 + ... + 3652471.

It is an arithmetic number, because the mean of its divisors is an integer number (197221068).

Almost surely, 2^1680031090 is an apocalyptic number.

1680031090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680031090 is a deficient number, since it is larger than the sum of its proper divisors (1475505998).

1680031090 is a wasteful number, since it uses less digits than its factorization.

1680031090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304513.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1680031090 is about 40988.1823212496. The cubic root of 1680031090 is about 1188.7917237032.

The spelling of 1680031090 in words is "one billion, six hundred eighty million, thirty-one thousand, ninety".