1224554749 has 16 divisors (see below), whose sum is σ = 1370134080. Its totient is φ = 1084752000.

The previous prime is 1224554741. The next prime is 1224554767. The reversal of 1224554749 is 9474554221.

It is a cyclic number.

It is not a de Polignac number, because 1224554749 - 2³ = 1224554741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224554741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657079 + ... + 658939.

It is an arithmetic number, because the mean of its divisors is an integer number (85633380).

Almost surely, 2^1224554749 is an apocalyptic number.

It is an amenable number.

1224554749 is a deficient number, since it is larger than the sum of its proper divisors (145579331).

1224554749 is a wasteful number, since it uses less digits than its factorization.

1224554749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its digits is 403200, while the sum is 43.

The square root of 1224554749 is about 34993.6386933397. The cubic root of 1224554749 is about 1069.8578286663.

The spelling of 1224554749 in words is "one billion, two hundred twenty-four million, five hundred fifty-four thousand, seven hundred forty-nine".