2678453979 has 16 divisors (see below), whose sum is σ = 3597519744. Its totient is φ = 1772539200.

The previous prime is 2678453963. The next prime is 2678454011. The reversal of 2678453979 is 9793548762.

It is not a de Polignac number, because 2678453979 - 2⁴ = 2678453963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2678453779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471999 + ... + 477639.

It is an arithmetic number, because the mean of its divisors is an integer number (224844984).

Almost surely, 2^2678453979 is an apocalyptic number.

2678453979 is a deficient number, since it is larger than the sum of its proper divisors (919065765).

2678453979 is a wasteful number, since it uses less digits than its factorization.

2678453979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778.

The product of its digits is 22861440, while the sum is 60.

The square root of 2678453979 is about 51753.7822675792. The cubic root of 2678453979 is about 1388.7627620437.

The spelling of 2678453979 in words is "two billion, six hundred seventy-eight million, four hundred fifty-three thousand, nine hundred seventy-nine".