1145222779 has 16 divisors (see below), whose sum is σ = 1191500640. Its totient is φ = 1099837440.

The previous prime is 1145222773. The next prime is 1145222803. The reversal of 1145222779 is 9772225411.

It is a cyclic number.

It is not a de Polignac number, because 1145222779 - 2¹¹ = 1145220731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145222773) 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, 1786299 + ... + 1786939.

It is an arithmetic number, because the mean of its divisors is an integer number (74468790).

Almost surely, 2^1145222779 is an apocalyptic number.

1145222779 is a deficient number, since it is larger than the sum of its proper divisors (46277861).

1145222779 is a wasteful number, since it uses less digits than its factorization.

1145222779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230.

The product of its digits is 70560, while the sum is 40.

The square root of 1145222779 is about 33841.1403324415. The cubic root of 1145222779 is about 1046.2368021375.

The spelling of 1145222779 in words is "one billion, one hundred forty-five million, two hundred twenty-two thousand, seven hundred seventy-nine".