1223554478 has 16 divisors (see below), whose sum is σ = 1876253760. Its totient is φ = 598162656.

The previous prime is 1223554463. The next prime is 1223554489. The reversal of 1223554478 is 8744553221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96788 + ... + 108696.

It is an arithmetic number, because the mean of its divisors is an integer number (117265860).

Almost surely, 2^1223554478 is an apocalyptic number.

1223554478 is a deficient number, since it is larger than the sum of its proper divisors (652699282).

1223554478 is a wasteful number, since it uses less digits than its factorization.

1223554478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13051.

The product of its digits is 268800, while the sum is 41.

The square root of 1223554478 is about 34979.3435901819. The cubic root of 1223554478 is about 1069.5664467648.

The spelling of 1223554478 in words is "one billion, two hundred twenty-three million, five hundred fifty-four thousand, four hundred seventy-eight".