1228456745 has 8 divisors (see below), whose sum is σ = 1475510784. Its totient is φ = 981856944.

The previous prime is 1228456741. The next prime is 1228456751. The reversal of 1228456745 is 5476548221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1228456745 - 2² = 1228456741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1228456696 and 1228456705.

It is not an unprimeable number, because it can be changed into a prime (1228456741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107579 + ... + 118448.

It is an arithmetic number, because the mean of its divisors is an integer number (184438848).

Almost surely, 2^1228456745 is an apocalyptic number.

It is an amenable number.

1228456745 is a deficient number, since it is larger than the sum of its proper divisors (247054039).

1228456745 is a wasteful number, since it uses less digits than its factorization.

1228456745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227119.

The product of its digits is 537600, while the sum is 44.

The square root of 1228456745 is about 35049.3472835087. The cubic root of 1228456745 is about 1070.9929772465.

The spelling of 1228456745 in words is "one billion, two hundred twenty-eight million, four hundred fifty-six thousand, seven hundred forty-five".