1123558478 has 8 divisors (see below), whose sum is σ = 1926100272. Its totient is φ = 481525056.

The previous prime is 1123558463. The next prime is 1123558493. The reversal of 1123558478 is 8748553211.

It is an interprime number because it is at equal distance from previous prime (1123558463) and next prime (1123558493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40127075 + ... + 40127102.

It is an arithmetic number, because the mean of its divisors is an integer number (240762534).

Almost surely, 2^1123558478 is an apocalyptic number.

1123558478 is a deficient number, since it is larger than the sum of its proper divisors (802541794).

1123558478 is an equidigital number, since it uses as much as digits as its factorization.

1123558478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80254186.

The product of its digits is 268800, while the sum is 44.

The square root of 1123558478 is about 33519.5238331334. The cubic root of 1123558478 is about 1039.5975014205.

The spelling of 1123558478 in words is "one billion, one hundred twenty-three million, five hundred fifty-eight thousand, four hundred seventy-eight".