2680186778 has 16 divisors (see below), whose sum is σ = 4368387840. Its totient is φ = 1228608000.

The previous prime is 2680186763. The next prime is 2680186783. The reversal of 2680186778 is 8776810862.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1136423 + ... + 1138778.

It is an arithmetic number, because the mean of its divisors is an integer number (273024240).

Almost surely, 2^2680186778 is an apocalyptic number.

2680186778 is a deficient number, since it is larger than the sum of its proper divisors (1688201062).

2680186778 is a wasteful number, since it uses less digits than its factorization.

2680186778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275253.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 2680186778 is about 51770.5203566663. The cubic root of 2680186778 is about 1389.0621795421.

The spelling of 2680186778 in words is "two billion, six hundred eighty million, one hundred eighty-six thousand, seven hundred seventy-eight".