1223345965 has 32 divisors (see below), whose sum is σ = 1565153280. Its totient is φ = 915968064.

The previous prime is 1223345941. The next prime is 1223345969. The reversal of 1223345965 is 5695433221.

It is a cyclic number.

It is not a de Polignac number, because 1223345965 - 2¹⁵ = 1223313197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223345969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1378752 + ... + 1379638.

It is an arithmetic number, because the mean of its divisors is an integer number (48911040).

Almost surely, 2^1223345965 is an apocalyptic number.

It is an amenable number.

1223345965 is a deficient number, since it is larger than the sum of its proper divisors (341807315).

1223345965 is a wasteful number, since it uses less digits than its factorization.

1223345965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 194400, while the sum is 40.

The square root of 1223345965 is about 34976.3629469961. The cubic root of 1223345965 is about 1069.5056863103.

The spelling of 1223345965 in words is "one billion, two hundred twenty-three million, three hundred forty-five thousand, nine hundred sixty-five".