2678439489 has 8 divisors (see below), whose sum is σ = 3895912032. Its totient is φ = 1623296640.

The previous prime is 2678439487. The next prime is 2678439499. The reversal of 2678439489 is 9849348762.

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

It is not a de Polignac number, because 2678439489 - 2¹ = 2678439487 is a prime.

It is a super-2 number, since 2×2678439489² = 14348076192469162242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2678439487) 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, 40582384 + ... + 40582449.

It is an arithmetic number, because the mean of its divisors is an integer number (486989004).

Almost surely, 2^2678439489 is an apocalyptic number.

It is an amenable number.

2678439489 is a deficient number, since it is larger than the sum of its proper divisors (1217472543).

2678439489 is a wasteful number, since it uses less digits than its factorization.

2678439489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81164847.

The product of its digits is 20901888, while the sum is 60.

The square root of 2678439489 is about 51753.6422776214. The cubic root of 2678439489 is about 1388.7602577124.

The spelling of 2678439489 in words is "two billion, six hundred seventy-eight million, four hundred thirty-nine thousand, four hundred eighty-nine".