1680347590 has 16 divisors (see below), whose sum is σ = 3058611840. Its totient is φ = 664586560.

The previous prime is 1680347579. The next prime is 1680347633. The reversal of 1680347590 is 957430861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943126 + ... + 944905.

It is an arithmetic number, because the mean of its divisors is an integer number (191163240).

Almost surely, 2^1680347590 is an apocalyptic number.

1680347590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680347590 is a deficient number, since it is larger than the sum of its proper divisors (1378264250).

1680347590 is a wasteful number, since it uses less digits than its factorization.

1680347590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888127.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1680347590 is about 40992.0430083693. The cubic root of 1680347590 is about 1188.8663709241.

The spelling of 1680347590 in words is "one billion, six hundred eighty million, three hundred forty-seven thousand, five hundred ninety".