1670916816 has 80 divisors (see below), whose sum is σ = 4877515200. Its totient is φ = 547523712.

The previous prime is 1670916803. The next prime is 1670916817. The reversal of 1670916816 is 6186190761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670916817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7291 + ... + 58266.

It is an arithmetic number, because the mean of its divisors is an integer number (60968940).

Almost surely, 2^1670916816 is an apocalyptic number.

1670916816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670916816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438757600).

1670916816 is an abundant number, since it is smaller than the sum of its proper divisors (3206598384).

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

1670916816 is a wasteful number, since it uses less digits than its factorization.

1670916816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65633 (or 65621 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1670916816 is about 40876.8493893549. The cubic root of 1670916816 is about 1186.6380678767.

The spelling of 1670916816 in words is "one billion, six hundred seventy million, nine hundred sixteen thousand, eight hundred sixteen".