1228210164 has 36 divisors (see below), whose sum is σ = 3105726624. Its totient is φ = 409260432.

The previous prime is 1228210163. The next prime is 1228210171. The reversal of 1228210164 is 4610128221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228210163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168769 + ... + 175895.

It is an arithmetic number, because the mean of its divisors is an integer number (86270184).

Almost surely, 2^1228210164 is an apocalyptic number.

It is an amenable number.

1228210164 is an abundant number, since it is smaller than the sum of its proper divisors (1877516460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228210164 is a wasteful number, since it uses less digits than its factorization.

1228210164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11924 (or 11919 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1228210164 is about 35045.8294808384. The cubic root of 1228210164 is about 1070.9213143812.

Adding to 1228210164 its reverse (4610128221), we get a palindrome (5838338385).

The spelling of 1228210164 in words is "one billion, two hundred twenty-eight million, two hundred ten thousand, one hundred sixty-four".