1863228866 has 16 divisors (see below), whose sum is σ = 2969944056. Its totient is φ = 873643776.

The previous prime is 1863228839. The next prime is 1863228889. The reversal of 1863228866 is 6688223681.

It can be written as a sum of positive squares in 4 ways, for example, as 1352694841 + 510534025 = 36779^2 + 22595^2 .

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, 89501 + ... + 108336.

Almost surely, 2^1863228866 is an apocalyptic number.

1863228866 is a deficient number, since it is larger than the sum of its proper divisors (1106715190).

1863228866 is a wasteful number, since it uses less digits than its factorization.

1863228866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198133.

The product of its digits is 1327104, while the sum is 50.

The square root of 1863228866 is about 43165.1348428335. The cubic root of 1863228866 is about 1230.5201638034.

The spelling of 1863228866 in words is "one billion, eight hundred sixty-three million, two hundred twenty-eight thousand, eight hundred sixty-six".