1213164 has 48 divisors (see below), whose sum is σ = 3225600. Its totient is φ = 394128.

The previous prime is 1213153. The next prime is 1213183. The reversal of 1213164 is 4613121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2^1213164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612800).

1213164 is an abundant number, since it is smaller than the sum of its proper divisors (2012436).

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

1213164 is a wasteful number, since it uses less digits than its factorization.

1213164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 291 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1213164 is about 1101.4372428786. The cubic root of 1213164 is about 106.6530234286.

Adding to 1213164 its reverse (4613121), we get a palindrome (5826285).

The spelling of 1213164 in words is "one million, two hundred thirteen thousand, one hundred sixty-four".