1680393696 has 48 divisors (see below), whose sum is σ = 4670510544. Its totient is φ = 527181824.

The previous prime is 1680393647. The next prime is 1680393697. The reversal of 1680393696 is 6963930861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680393697) 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, 513195 + ... + 516458.

It is an arithmetic number, because the mean of its divisors is an integer number (97302303).

Almost surely, 2^1680393696 is an apocalyptic number.

1680393696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1680393696 is an abundant number, since it is smaller than the sum of its proper divisors (2990116848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680393696 is a wasteful number, since it uses less digits than its factorization.

1680393696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029683 (or 1029675 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 1680393696 is about 40992.6053819466. The cubic root of 1680393696 is about 1188.8772443433.

The spelling of 1680393696 in words is "one billion, six hundred eighty million, three hundred ninety-three thousand, six hundred ninety-six".