1223634454 has 16 divisors (see below), whose sum is σ = 2188862208. Its totient is φ = 501613992.

The previous prime is 1223634443. The next prime is 1223634487. The reversal of 1223634454 is 4544363221.

It is a congruent number.

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, 1899732 + ... + 1900375.

It is an arithmetic number, because the mean of its divisors is an integer number (136803888).

Almost surely, 2^1223634454 is an apocalyptic number.

1223634454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1223634454 is a deficient number, since it is larger than the sum of its proper divisors (965227754).

1223634454 is a wasteful number, since it uses less digits than its factorization.

1223634454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800139.

The product of its digits is 69120, while the sum is 34.

The square root of 1223634454 is about 34980.4867604783. The cubic root of 1223634454 is about 1069.5897498499.

Adding to 1223634454 its reverse (4544363221), we get a palindrome (5767997675).

The spelling of 1223634454 in words is "one billion, two hundred twenty-three million, six hundred thirty-four thousand, four hundred fifty-four".