2008778670 has 128 divisors (see below), whose sum is σ = 5581440000. Its totient is φ = 513475200.

The previous prime is 2008778663. The next prime is 2008778677. The reversal of 2008778670 is 768778002.

It is an interprime number because it is at equal distance from previous prime (2008778663) and next prime (2008778677).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2008778677) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1181481 + ... + 1183179.

It is an arithmetic number, because the mean of its divisors is an integer number (43605000).

Almost surely, 2^2008778670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2008778670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790720000).

2008778670 is an abundant number, since it is smaller than the sum of its proper divisors (3572661330).

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

2008778670 is a wasteful number, since it uses less digits than its factorization.

2008778670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 2008778670 is about 44819.4005984016. The cubic root of 2008778670 is about 1261.7617645322.

The spelling of 2008778670 in words is "two billion, eight million, seven hundred seventy-eight thousand, six hundred seventy".