1680330157 has 8 divisors (see below), whose sum is σ = 1849906080. Its totient is φ = 1513557360.

The previous prime is 1680330097. The next prime is 1680330161. The reversal of 1680330157 is 7510330861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680330157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680330187) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 699523 + ... + 701920.

It is an arithmetic number, because the mean of its divisors is an integer number (231238260).

Almost surely, 2^1680330157 is an apocalyptic number.

It is an amenable number.

1680330157 is a deficient number, since it is larger than the sum of its proper divisors (169575923).

1680330157 is a wasteful number, since it uses less digits than its factorization.

1680330157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401563.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1680330157 is about 40991.8303689894. The cubic root of 1680330157 is about 1188.8622595566.

The spelling of 1680330157 in words is "one billion, six hundred eighty million, three hundred thirty thousand, one hundred fifty-seven".