1172228345 has 16 divisors (see below), whose sum is σ = 1425600000. Its totient is φ = 925212288.

The previous prime is 1172228303. The next prime is 1172228347. The reversal of 1172228345 is 5438222711.

It is a cyclic number.

It is not a de Polignac number, because 1172228345 - 2¹⁰ = 1172227321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1172228347) 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, 219416 + ... + 224694.

It is an arithmetic number, because the mean of its divisors is an integer number (89100000).

Almost surely, 2^1172228345 is an apocalyptic number.

It is an amenable number.

1172228345 is a deficient number, since it is larger than the sum of its proper divisors (253371655).

1172228345 is an equidigital number, since it uses as much as digits as its factorization.

1172228345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872.

The product of its digits is 26880, while the sum is 35.

The square root of 1172228345 is about 34237.8203891544. The cubic root of 1172228345 is about 1054.3967846109.

The spelling of 1172228345 in words is "one billion, one hundred seventy-two million, two hundred twenty-eight thousand, three hundred forty-five".