1224360645 has 32 divisors (see below), whose sum is σ = 1987018752. Its totient is φ = 643712832.

The previous prime is 1224360619. The next prime is 1224360659. The reversal of 1224360645 is 5460634221.

It is not a de Polignac number, because 1224360645 - 2²⁵ = 1190806213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308544 + ... + 312486.

It is an arithmetic number, because the mean of its divisors is an integer number (62094336).

Almost surely, 2^1224360645 is an apocalyptic number.

1224360645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224360645 is a deficient number, since it is larger than the sum of its proper divisors (762658107).

1224360645 is a wasteful number, since it uses less digits than its factorization.

1224360645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1224360645 is about 34990.8651650684. The cubic root of 1224360645 is about 1069.8012980083.

Adding to 1224360645 its reverse (5460634221), we get a palindrome (6684994866).

The spelling of 1224360645 in words is "one billion, two hundred twenty-four million, three hundred sixty thousand, six hundred forty-five".