2809954980 has 108 divisors (see below), whose sum is σ = 9915157980. Its totient is φ = 642273408.

The previous prime is 2809954949. The next prime is 2809954981. The reversal of 2809954980 is 894599082.

2809954980 is a `hidden beast` number, since 2 + 8 + 0 + 99 + 549 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1875063204 + 934891776 = 43302^2 + 30576^2 .

It is not an unprimeable number, because it can be changed into a prime (2809954981) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 150475 + ... + 168114.

Almost surely, 2^2809954980 is an apocalyptic number.

2809954980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2809954980 is an abundant number, since it is smaller than the sum of its proper divisors (7105203000).

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

2809954980 is a wasteful number, since it uses less digits than its factorization.

2809954980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318618 (or 318606 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 2809954980 is about 53009.0084796914. The cubic root of 2809954980 is about 1411.1281449619.

The spelling of 2809954980 in words is "two billion, eight hundred nine million, nine hundred fifty-four thousand, nine hundred eighty".