1223240189 has 8 divisors (see below), whose sum is σ = 1261640448. Its totient is φ = 1185355600.

The previous prime is 1223240147. The next prime is 1223240201. The reversal of 1223240189 is 9810423221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223240189 - 2²⁴ = 1206462973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223240789) 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 7 ways as a sum of consecutive naturals, for example, 124097 + ... + 133590.

It is an arithmetic number, because the mean of its divisors is an integer number (157705056).

Almost surely, 2^1223240189 is an apocalyptic number.

It is an amenable number.

1223240189 is a deficient number, since it is larger than the sum of its proper divisors (38400259).

1223240189 is a wasteful number, since it uses less digits than its factorization.

1223240189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257835.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1223240189 is about 34974.8508074016. The cubic root of 1223240189 is about 1069.4748606629.

The spelling of 1223240189 in words is "one billion, two hundred twenty-three million, two hundred forty thousand, one hundred eighty-nine".