2772385209 has 48 divisors (see below), whose sum is σ = 4663526400. Its totient is φ = 1569304800.

The previous prime is 2772385207. The next prime is 2772385219. The reversal of 2772385209 is 9025832772.

2772385209 is a `hidden beast` number, since 27 + 72 + 38 + 520 + 9 = 666.

It is not a de Polignac number, because 2772385209 - 2¹ = 2772385207 is a prime.

It is a super-2 number, since 2×2772385209² = 15372239494163947362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2772385207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123172 + ... + 143930.

It is an arithmetic number, because the mean of its divisors is an integer number (97156800).

Almost surely, 2^2772385209 is an apocalyptic number.

It is an amenable number.

2772385209 is a deficient number, since it is larger than the sum of its proper divisors (1891141191).

2772385209 is a wasteful number, since it uses less digits than its factorization.

2772385209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20866 (or 20863 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 2772385209 is about 52653.4444172459. Note that the first 4 decimals coincide. The cubic root of 2772385209 is about 1404.8108658247.

The spelling of 2772385209 in words is "two billion, seven hundred seventy-two million, three hundred eighty-five thousand, two hundred nine".