1681628160 has 88 divisors (see below), whose sum is σ = 5378631696. Its totient is φ = 448430080.

The previous prime is 1681628153. The next prime is 1681628171. The reversal of 1681628160 is 618261861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39381 + ... + 70100.

Almost surely, 2^1681628160 is an apocalyptic number.

1681628160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1681628160 is an abundant number, since it is smaller than the sum of its proper divisors (3697003536).

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

1681628160 is a wasteful number, since it uses less digits than its factorization.

1681628160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109509 (or 109491 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1681628160 is about 41007.6597722913. The cubic root of 1681628160 is about 1189.1683005250.

The spelling of 1681628160 in words is "one billion, six hundred eighty-one million, six hundred twenty-eight thousand, one hundred sixty".