1680330155 has 32 divisors (see below), whose sum is σ = 2334818304. Its totient is φ = 1137125376.

The previous prime is 1680330097. The next prime is 1680330161. The reversal of 1680330155 is 5510330861.

It is a cyclic number.

It is not a de Polignac number, because 1680330155 - 2¹⁴ = 1680313771 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380107 + ... + 1381323.

It is an arithmetic number, because the mean of its divisors is an integer number (72963072).

Almost surely, 2^1680330155 is an apocalyptic number.

1680330155 is a deficient number, since it is larger than the sum of its proper divisors (654488149).

1680330155 is a wasteful number, since it uses less digits than its factorization.

1680330155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1680330155 is about 40991.8303445943. The cubic root of 1680330155 is about 1188.8622590849.

The spelling of 1680330155 in words is "one billion, six hundred eighty million, three hundred thirty thousand, one hundred fifty-five".