1680864053 has 8 divisors (see below), whose sum is σ = 1834642656. Its totient is φ = 1527247600.

The previous prime is 1680864049. The next prime is 1680864071. The reversal of 1680864053 is 3504680861.

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 1680864053 - 2² = 1680864049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1680864053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680863053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18326 + ... + 60807.

It is an arithmetic number, because the mean of its divisors is an integer number (229330332).

Almost surely, 2^1680864053 is an apocalyptic number.

It is an amenable number.

1680864053 is a deficient number, since it is larger than the sum of its proper divisors (153778603).

1680864053 is a wasteful number, since it uses less digits than its factorization.

1680864053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81075.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1680864053 is about 40998.3420762352. The cubic root of 1680864053 is about 1188.9881597335.

The spelling of 1680864053 in words is "one billion, six hundred eighty million, eight hundred sixty-four thousand, fifty-three".