1223265634 has 16 divisors (see below), whose sum is σ = 1988018208. Its totient is φ = 562266432.

The previous prime is 1223265629. The next prime is 1223265671. The reversal of 1223265634 is 4365623221.

It is a super-2 number, since 2×1223265634² = 2992757622650843912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 1223265634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416892 + ... + 419815.

It is an arithmetic number, because the mean of its divisors is an integer number (124251138).

Almost surely, 2^1223265634 is an apocalyptic number.

1223265634 is a deficient number, since it is larger than the sum of its proper divisors (764752574).

1223265634 is a wasteful number, since it uses less digits than its factorization.

1223265634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836769.

The product of its digits is 51840, while the sum is 34.

The square root of 1223265634 is about 34975.2145668901. The cubic root of 1223265634 is about 1069.4822761047.

Adding to 1223265634 its reverse (4365623221), we get a palindrome (5588888855).

The spelling of 1223265634 in words is "one billion, two hundred twenty-three million, two hundred sixty-five thousand, six hundred thirty-four".