869149186 has 16 divisors (see below), whose sum is σ = 1373492160. Its totient is φ = 411356880.

The previous prime is 869149163. The next prime is 869149189. The reversal of 869149186 is 681941968.

It is not an unprimeable number, because it can be changed into a prime (869149189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39571 + ... + 57481.

It is an arithmetic number, because the mean of its divisors is an integer number (85843260).

Almost surely, 2^869149186 is an apocalyptic number.

869149186 is a deficient number, since it is larger than the sum of its proper divisors (504342974).

869149186 is a wasteful number, since it uses less digits than its factorization.

869149186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19209.

The product of its digits is 746496, while the sum is 52.

The square root of 869149186 is about 29481.3362315890. The cubic root of 869149186 is about 954.3289735332.

It can be divided in two parts, 86914 and 9186, that added together give a square (96100 = 310²).

The spelling of 869149186 in words is "eight hundred sixty-nine million, one hundred forty-nine thousand, one hundred eighty-six".