1224153623 has 16 divisors (see below), whose sum is σ = 1557369600. Its totient is φ = 953883000.

The previous prime is 1224153607. The next prime is 1224153631. The reversal of 1224153623 is 3263514221.

It is a happy number.

It is not a de Polignac number, because 1224153623 - 2⁴ = 1224153607 is a prime.

It is a super-2 number, since 2×1224153623² = 2997104185408052258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224153923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158453 + ... + 165998.

It is an arithmetic number, because the mean of its divisors is an integer number (97335600).

Almost surely, 2^1224153623 is an apocalyptic number.

1224153623 is a deficient number, since it is larger than the sum of its proper divisors (333215977).

1224153623 is an equidigital number, since it uses as much as digits as its factorization.

1224153623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324483 (or 324469 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 1224153623 is about 34987.9068107825. The cubic root of 1224153623 is about 1069.7409985399.

Adding to 1224153623 its reverse (3263514221), we get a palindrome (4487667844).

The spelling of 1224153623 in words is "one billion, two hundred twenty-four million, one hundred fifty-three thousand, six hundred twenty-three".