2186860378 has 16 divisors (see below), whose sum is σ = 3506400576. Its totient is φ = 1020379360.

The previous prime is 2186860367. The next prime is 2186860381. The reversal of 2186860378 is 8730686812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577876 + ... + 581647.

It is an arithmetic number, because the mean of its divisors is an integer number (219150036).

Almost surely, 2^2186860378 is an apocalyptic number.

2186860378 is a deficient number, since it is larger than the sum of its proper divisors (1319540198).

2186860378 is a wasteful number, since it uses less digits than its factorization.

2186860378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159589.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 2186860378 is about 46763.8789879539. The cubic root of 2186860378 is about 1297.9969899495.

The spelling of 2186860378 in words is "two billion, one hundred eighty-six million, eight hundred sixty thousand, three hundred seventy-eight".