1123628837 has 4 divisors (see below), whose sum is σ = 1123913676. Its totient is φ = 1123344000.

The previous prime is 1123628833. The next prime is 1123628873. The reversal of 1123628837 is 7388263211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 401040676 + 722588161 = 20026^2 + 26881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123628837 - 2² = 1123628833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123628794 and 1123628803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123628833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136418 + ... + 144419.

It is an arithmetic number, because the mean of its divisors is an integer number (280978419).

Almost surely, 2^1123628837 is an apocalyptic number.

It is an amenable number.

1123628837 is a deficient number, since it is larger than the sum of its proper divisors (284839).

1123628837 is an equidigital number, since it uses as much as digits as its factorization.

1123628837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284838.

The product of its digits is 96768, while the sum is 41.

The square root of 1123628837 is about 33520.5733393688. The cubic root of 1123628837 is about 1039.6192013781.

The spelling of 1123628837 in words is "one billion, one hundred twenty-three million, six hundred twenty-eight thousand, eight hundred thirty-seven".