1223681798 has 8 divisors (see below), whose sum is σ = 1835783040. Its totient is φ = 611754120.

The previous prime is 1223681791. The next prime is 1223681819. The reversal of 1223681798 is 8971863221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223681791) by changing a digit.

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, 24038 + ... + 55001.

It is an arithmetic number, because the mean of its divisors is an integer number (229472880).

Almost surely, 2^1223681798 is an apocalyptic number.

1223681798 is a deficient number, since it is larger than the sum of its proper divisors (612101242).

1223681798 is an equidigital number, since it uses as much as digits as its factorization.

1223681798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86782.

The product of its digits is 290304, while the sum is 47.

The square root of 1223681798 is about 34981.1634740756. The cubic root of 1223681798 is about 1069.6035442757.

The spelling of 1223681798 in words is "one billion, two hundred twenty-three million, six hundred eighty-one thousand, seven hundred ninety-eight".