1226361144 has 64 divisors (see below), whose sum is σ = 3100544640. Its totient is φ = 404196480.

The previous prime is 1226361139. The next prime is 1226361163. The reversal of 1226361144 is 4411636221.

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

It is a congruent number.

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, 887334 + ... + 888714.

It is an arithmetic number, because the mean of its divisors is an integer number (48446010).

Almost surely, 2^1226361144 is an apocalyptic number.

It is an amenable number.

1226361144 is an abundant number, since it is smaller than the sum of its proper divisors (1874183496).

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

1226361144 is a wasteful number, since it uses less digits than its factorization.

1226361144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1776 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1226361144 is about 35019.4395157889. The cubic root of 1226361144 is about 1070.3836351090.

Adding to 1226361144 its reverse (4411636221), we get a palindrome (5637997365).

The spelling of 1226361144 in words is "one billion, two hundred twenty-six million, three hundred sixty-one thousand, one hundred forty-four".