1228226345 has 16 divisors (see below), whose sum is σ = 1481545728. Its totient is φ = 977481600.

The previous prime is 1228226341. The next prime is 1228226393. The reversal of 1228226345 is 5436228221.

It is a happy number.

It is not a de Polignac number, because 1228226345 - 2² = 1228226341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228226341) 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, 1066520 + ... + 1067670.

It is an arithmetic number, because the mean of its divisors is an integer number (92596608).

Almost surely, 2^1228226345 is an apocalyptic number.

It is an amenable number.

1228226345 is a deficient number, since it is larger than the sum of its proper divisors (253319383).

1228226345 is a wasteful number, since it uses less digits than its factorization.

1228226345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its digits is 46080, while the sum is 35.

The square root of 1228226345 is about 35046.0603349364. The cubic root of 1228226345 is about 1070.9260172956.

The spelling of 1228226345 in words is "one billion, two hundred twenty-eight million, two hundred twenty-six thousand, three hundred forty-five".