1680043495 has 8 divisors (see below), whose sum is σ = 2171133216. Its totient is φ = 1240647456.

The previous prime is 1680043493. The next prime is 1680043499. The reversal of 1680043495 is 5943400861.

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

It is a cyclic number.

It is not a de Polignac number, because 1680043495 - 2¹ = 1680043493 is a prime.

It is a super-2 number, since 2×1680043495² = 5645092290183630050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680043493) 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, 12923347 + ... + 12923476.

It is an arithmetic number, because the mean of its divisors is an integer number (271391652).

Almost surely, 2^1680043495 is an apocalyptic number.

1680043495 is a deficient number, since it is larger than the sum of its proper divisors (491089721).

1680043495 is a wasteful number, since it uses less digits than its factorization.

1680043495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25846841.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1680043495 is about 40988.3336450752. Note that the first 3 decimals coincide. The cubic root of 1680043495 is about 1188.7946496262.

The spelling of 1680043495 in words is "one billion, six hundred eighty million, forty-three thousand, four hundred ninety-five".