2678509836 has 24 divisors (see below), whose sum is σ = 6944285040. Its totient is φ = 892836576.

The previous prime is 2678509831. The next prime is 2678509843. The reversal of 2678509836 is 6389058762.

It is a happy number.

2678509836 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2678509831) 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, 12400401 + ... + 12400616.

It is an arithmetic number, because the mean of its divisors is an integer number (289345210).

Almost surely, 2^2678509836 is an apocalyptic number.

It is an amenable number.

2678509836 is an abundant number, since it is smaller than the sum of its proper divisors (4265775204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2678509836 is a wasteful number, since it uses less digits than its factorization.

2678509836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801030 (or 24801022 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 2678509836 is about 51754.3219064843. The cubic root of 2678509836 is about 1388.7724158195.

The spelling of 2678509836 in words is "two billion, six hundred seventy-eight million, five hundred nine thousand, eight hundred thirty-six".