1284186164 has 12 divisors (see below), whose sum is σ = 2248419264. Its totient is φ = 641780664.

The previous prime is 1284186161. The next prime is 1284186187. The reversal of 1284186164 is 4616814821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284186161) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 68732 + ... + 85395.

It is an arithmetic number, because the mean of its divisors is an integer number (187368272).

Almost surely, 2^1284186164 is an apocalyptic number.

It is an amenable number.

1284186164 is a deficient number, since it is larger than the sum of its proper divisors (964233100).

1284186164 is a wasteful number, since it uses less digits than its factorization.

1284186164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156214 (or 156212 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 1284186164 is about 35835.5433054949. The cubic root of 1284186164 is about 1086.9494041827.

The spelling of 1284186164 in words is "one billion, two hundred eighty-four million, one hundred eighty-six thousand, one hundred sixty-four".