1681793072 has 20 divisors (see below), whose sum is σ = 3264448056. Its totient is φ = 839354880.

The previous prime is 1681793033. The next prime is 1681793089. The reversal of 1681793072 is 2703971861.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87329 + ... + 104832.

Almost surely, 2^1681793072 is an apocalyptic number.

It is an amenable number.

1681793072 is a deficient number, since it is larger than the sum of its proper divisors (1582654984).

1681793072 is a wasteful number, since it uses less digits than its factorization.

1681793072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192716 (or 192710 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1681793072 is about 41009.6704692930. The cubic root of 1681793072 is about 1189.2071719231.

The spelling of 1681793072 in words is "one billion, six hundred eighty-one million, seven hundred ninety-three thousand, seventy-two".