2678166986 has 32 divisors (see below), whose sum is σ = 4531464000. Its totient is φ = 1176515200.

The previous prime is 2678166899. The next prime is 2678167003. The reversal of 2678166986 is 6896618762.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82640 + ... + 110388.

It is an arithmetic number, because the mean of its divisors is an integer number (141608250).

Almost surely, 2^2678166986 is an apocalyptic number.

2678166986 is a deficient number, since it is larger than the sum of its proper divisors (1853297014).

2678166986 is a wasteful number, since it uses less digits than its factorization.

2678166986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27910.

The product of its digits is 10450944, while the sum is 59.

The square root of 2678166986 is about 51751.0095167234. The cubic root of 2678166986 is about 1388.7131588733.

The spelling of 2678166986 in words is "two billion, six hundred seventy-eight million, one hundred sixty-six thousand, nine hundred eighty-six".