2678409249 has 8 divisors (see below), whose sum is σ = 3595180800. Its totient is φ = 1773621936.

The previous prime is 2678409229. The next prime is 2678409287. The reversal of 2678409249 is 9429048762.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2678409249 - 2¹² = 2678405153 is a prime.

It is a super-3 number, since 3×2678409249³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2678409229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2995537 + ... + 2996430.

It is an arithmetic number, because the mean of its divisors is an integer number (449397600).

Almost surely, 2^2678409249 is an apocalyptic number.

It is an amenable number.

2678409249 is a deficient number, since it is larger than the sum of its proper divisors (916771551).

2678409249 is a wasteful number, since it uses less digits than its factorization.

2678409249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992119.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 2678409249 is about 51753.3501234461. The cubic root of 2678409249 is about 1388.7550312527.

The spelling of 2678409249 in words is "two billion, six hundred seventy-eight million, four hundred nine thousand, two hundred forty-nine".