1680049448 has 64 divisors (see below), whose sum is σ = 3981294720. Its totient is φ = 645580800.

The previous prime is 1680049411. The next prime is 1680049457. The reversal of 1680049448 is 8449400861.

It is a super-2 number, since 2×1680049448² = 5645132295450209408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1680049399 and 1680049408.

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 15 ways as a sum of consecutive naturals, for example, 26288 + ... + 63648.

It is an arithmetic number, because the mean of its divisors is an integer number (62207730).

Almost surely, 2^1680049448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1680049448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1990647360).

1680049448 is an abundant number, since it is smaller than the sum of its proper divisors (2301245272).

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

1680049448 is a wasteful number, since it uses less digits than its factorization.

1680049448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37458 (or 37454 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1680049448 is about 40988.4062632350. The cubic root of 1680049448 is about 1188.7960537339.

The spelling of 1680049448 in words is "one billion, six hundred eighty million, forty-nine thousand, four hundred forty-eight".