2186290804 has 6 divisors (see below), whose sum is σ = 3826008914. Its totient is φ = 1093145400.

The previous prime is 2186290759. The next prime is 2186290819. The reversal of 2186290804 is 4080926812.

It can be written as a sum of positive squares in only one way, i.e., 1780671204 + 405619600 = 42198^2 + 20140^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273286347 + ... + 273286354.

Almost surely, 2^2186290804 is an apocalyptic number.

It is an amenable number.

2186290804 is a deficient number, since it is larger than the sum of its proper divisors (1639718110).

2186290804 is a wasteful number, since it uses less digits than its factorization.

2186290804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546572705 (or 546572703 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 2186290804 is about 46757.7886987826. The cubic root of 2186290804 is about 1297.8842911632.

The spelling of 2186290804 in words is "two billion, one hundred eighty-six million, two hundred ninety thousand, eight hundred four".