1165223147 has 4 divisors (see below), whose sum is σ = 1271152536. Its totient is φ = 1059293760.

The previous prime is 1165223119. The next prime is 1165223177. The reversal of 1165223147 is 7413225611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1165223147 - 2⁶ = 1165223083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165223177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52964678 + ... + 52964699.

It is an arithmetic number, because the mean of its divisors is an integer number (317788134).

Almost surely, 2^1165223147 is an apocalyptic number.

1165223147 is a deficient number, since it is larger than the sum of its proper divisors (105929389).

1165223147 is a wasteful number, since it uses less digits than its factorization.

1165223147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105929388.

The product of its digits is 10080, while the sum is 32.

The square root of 1165223147 is about 34135.3650485827. The cubic root of 1165223147 is about 1052.2922399724.

Adding to 1165223147 its reverse (7413225611), we get a palindrome (8578448758).

The spelling of 1165223147 in words is "one billion, one hundred sixty-five million, two hundred twenty-three thousand, one hundred forty-seven".