1219225424 has 30 divisors (see below), whose sum is σ = 2445214590. Its totient is φ = 588228480.

The previous prime is 1219225393. The next prime is 1219225451. The reversal of 1219225424 is 4245229121.

It can be written as a sum of positive squares in 3 ways, for example, as 491952400 + 727273024 = 22180^2 + 26968^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 751334 + ... + 752954.

It is an arithmetic number, because the mean of its divisors is an integer number (81507153).

Almost surely, 2^1219225424 is an apocalyptic number.

It is an amenable number.

1219225424 is an abundant number, since it is smaller than the sum of its proper divisors (1225989166).

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

1219225424 is an frugal number, since it uses more digits than its factorization.

1219225424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279 (or 1652 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 1219225424 is about 34917.4086094601. The cubic root of 1219225424 is about 1068.3035463496.

The spelling of 1219225424 in words is "one billion, two hundred nineteen million, two hundred twenty-five thousand, four hundred twenty-four".