1680733434 has 16 divisors (see below), whose sum is σ = 3361917888. Its totient is φ = 560169312.

The previous prime is 1680733393. The next prime is 1680733447. The reversal of 1680733434 is 4343370861.

It is a junction number, because it is equal to n+sod(n) for n = 1680733392 and 1680733401.

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, 47814 + ... + 75150.

It is an arithmetic number, because the mean of its divisors is an integer number (210119868).

Almost surely, 2^1680733434 is an apocalyptic number.

1680733434 is an abundant number, since it is smaller than the sum of its proper divisors (1681184454).

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

1680733434 is a wasteful number, since it uses less digits than its factorization.

1680733434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37589.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 1680733434 is about 40996.7490662369. The cubic root of 1680733434 is about 1188.9573604020.

The spelling of 1680733434 in words is "one billion, six hundred eighty million, seven hundred thirty-three thousand, four hundred thirty-four".