1123607990 has 8 divisors (see below), whose sum is σ = 2022494400. Its totient is φ = 449443192.

The previous prime is 1123607909. The next prime is 1123608049. The reversal of 1123607990 is 997063211.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56180390 + ... + 56180409.

It is an arithmetic number, because the mean of its divisors is an integer number (252811800).

Almost surely, 2^1123607990 is an apocalyptic number.

1123607990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123607990 is a deficient number, since it is larger than the sum of its proper divisors (898886410).

1123607990 is a wasteful number, since it uses less digits than its factorization.

1123607990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112360806.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1123607990 is about 33520.2623796414. The cubic root of 1123607990 is about 1039.6127718897.

The spelling of 1123607990 in words is "one billion, one hundred twenty-three million, six hundred seven thousand, nine hundred ninety".