1220098164 has 12 divisors (see below), whose sum is σ = 2846895744. Its totient is φ = 406699384.

The previous prime is 1220098163. The next prime is 1220098169. The reversal of 1220098164 is 4618900221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220098163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50837412 + ... + 50837435.

It is an arithmetic number, because the mean of its divisors is an integer number (237241312).

Almost surely, 2^1220098164 is an apocalyptic number.

It is an amenable number.

1220098164 is an abundant number, since it is smaller than the sum of its proper divisors (1626797580).

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

1220098164 is a wasteful number, since it uses less digits than its factorization.

1220098164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101674854 (or 101674852 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1220098164 is about 34929.9035784527. The cubic root of 1220098164 is about 1068.5583881651.

Adding to 1220098164 its reverse (4618900221), we get a palindrome (5838998385).

The spelling of 1220098164 in words is "one billion, two hundred twenty million, ninety-eight thousand, one hundred sixty-four".