2678913639 has 24 divisors (see below), whose sum is σ = 4018939392. Its totient is φ = 1717698960.

The previous prime is 2678913623. The next prime is 2678913641. The reversal of 2678913639 is 9363198762.

It is not a de Polignac number, because 2678913639 - 2⁴ = 2678913623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678913649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16024 + ... + 74930.

It is an arithmetic number, because the mean of its divisors is an integer number (167455808).

Almost surely, 2^2678913639 is an apocalyptic number.

2678913639 is a deficient number, since it is larger than the sum of its proper divisors (1340025753).

2678913639 is a wasteful number, since it uses less digits than its factorization.

2678913639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59107 (or 59104 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 2678913639 is about 51758.2229119200. Note that the first 3 decimals coincide. The cubic root of 2678913639 is about 1388.8422011757.

The spelling of 2678913639 in words is "two billion, six hundred seventy-eight million, nine hundred thirteen thousand, six hundred thirty-nine".