1123628318 has 4 divisors (see below), whose sum is σ = 1685442480. Its totient is φ = 561814158.

The previous prime is 1123628291. The next prime is 1123628347. The reversal of 1123628318 is 8138263211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280907078 + ... + 280907081.

It is an arithmetic number, because the mean of its divisors is an integer number (421360620).

Almost surely, 2^1123628318 is an apocalyptic number.

1123628318 is a deficient number, since it is larger than the sum of its proper divisors (561814162).

1123628318 is an equidigital number, since it uses as much as digits as its factorization.

1123628318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561814161.

The product of its digits is 13824, while the sum is 35.

The square root of 1123628318 is about 33520.5655978535. The cubic root of 1123628318 is about 1039.6190413126.

The spelling of 1123628318 in words is "one billion, one hundred twenty-three million, six hundred twenty-eight thousand, three hundred eighteen".