1226813364 has 240 divisors, whose sum is σ = 3969326592. Its totient is φ = 322403328.

The previous prime is 1226813359. The next prime is 1226813377. The reversal of 1226813364 is 4633186221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1811794 + ... + 1812470.

Almost surely, 2^1226813364 is an apocalyptic number.

1226813364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226813364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984663296).

1226813364 is an abundant number, since it is smaller than the sum of its proper divisors (2742513228).

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

1226813364 is a wasteful number, since it uses less digits than its factorization.

1226813364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 753 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1226813364 is about 35025.8956202407. The cubic root of 1226813364 is about 1070.5151867335.

Adding to 1226813364 its reverse (4633186221), we get a palindrome (5859999585).

The spelling of 1226813364 in words is "one billion, two hundred twenty-six million, eight hundred thirteen thousand, three hundred sixty-four".