1670844864 has 224 divisors, whose sum is σ = 5092476480. Its totient is φ = 481787904.

The previous prime is 1670844823. The next prime is 1670844869. The reversal of 1670844864 is 4684480761.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670844869) 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 31 ways as a sum of consecutive naturals, for example, 7170892 + ... + 7171124.

It is an arithmetic number, because the mean of its divisors is an integer number (22734270).

Almost surely, 2^1670844864 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 1670844864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2546238240).

1670844864 is an abundant number, since it is smaller than the sum of its proper divisors (3421631616).

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

1670844864 is a wasteful number, since it uses less digits than its factorization.

1670844864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 1670844864 is about 40875.9692729114. The cubic root of 1670844864 is about 1186.6210348709.

The spelling of 1670844864 in words is "one billion, six hundred seventy million, eight hundred forty-four thousand, eight hundred sixty-four".