2678913685 has 16 divisors (see below), whose sum is σ = 3675974400. Its totient is φ = 1835951616.

The previous prime is 2678913667. The next prime is 2678913691. The reversal of 2678913685 is 5863198762.

It is a cyclic number.

It is not a de Polignac number, because 2678913685 - 2²⁵ = 2645359253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45856 + ... + 86374.

It is an arithmetic number, because the mean of its divisors is an integer number (229748400).

Almost surely, 2^2678913685 is an apocalyptic number.

It is an amenable number.

2678913685 is a deficient number, since it is larger than the sum of its proper divisors (997060715).

2678913685 is a wasteful number, since it uses less digits than its factorization.

2678913685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42420.

The product of its digits is 4354560, while the sum is 55.

The square root of 2678913685 is about 51758.2233562938. The cubic root of 2678913685 is about 1388.8422091251.

The spelling of 2678913685 in words is "two billion, six hundred seventy-eight million, nine hundred thirteen thousand, six hundred eighty-five".