2869081920 has 84 divisors (see below), whose sum is σ = 9868456260. Its totient is φ = 765087744.

The previous prime is 2869081889. The next prime is 2869081921. The reversal of 2869081920 is 291809682.

It can be written as a sum of positive squares in 2 ways, for example, as 438986304 + 2430095616 = 20952^2 + 49296^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 (2869081921) 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 11 ways as a sum of consecutive naturals, for example, 495225 + ... + 500984.

Almost surely, 2^2869081920 is an apocalyptic number.

2869081920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2869081920 is an abundant number, since it is smaller than the sum of its proper divisors (6999374340).

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

2869081920 is a wasteful number, since it uses less digits than its factorization.

2869081920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996232 (or 996219 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2869081920 is about 53563.8116642197. The cubic root of 2869081920 is about 1420.9571540617.

The spelling of 2869081920 in words is "two billion, eight hundred sixty-nine million, eighty-one thousand, nine hundred twenty".