868499186 has 4 divisors (see below), whose sum is σ = 1302748782. Its totient is φ = 434249592.

The previous prime is 868499183. The next prime is 868499189. The reversal of 868499186 is 681994868.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (868499183) and next prime (868499189).

It can be written as a sum of positive squares in only one way, i.e., 857376961 + 11122225 = 29281^2 + 3335^2 .

It is not an unprimeable number, because it can be changed into a prime (868499183) by changing a digit.

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 as a sum of consecutive naturals, namely, 217124795 + ... + 217124798.

Almost surely, 2^868499186 is an apocalyptic number.

868499186 is a deficient number, since it is larger than the sum of its proper divisors (434249596).

868499186 is a wasteful number, since it uses less digits than its factorization.

868499186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434249595.

The product of its digits is 5971968, while the sum is 59.

The square root of 868499186 is about 29470.3102460765. The cubic root of 868499186 is about 954.0910134137.

The spelling of 868499186 in words is "eight hundred sixty-eight million, four hundred ninety-nine thousand, one hundred eighty-six".