1233940109 has 2 divisors, whose sum is σ = 1233940110. Its totient is φ = 1233940108.

The previous prime is 1233940067. The next prime is 1233940153. The reversal of 1233940109 is 9010493321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191975625 + 41964484 = 34525^2 + 6478^2 .

It is an emirp because it is prime and its reverse (9010493321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1233940109 - 2²⁰ = 1232891533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233940159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616970054 + 616970055.

It is an arithmetic number, because the mean of its divisors is an integer number (616970055).

Almost surely, 2^1233940109 is an apocalyptic number.

It is an amenable number.

1233940109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233940109 is an equidigital number, since it uses as much as digits as its factorization.

1233940109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1233940109 is about 35127.4836701976. The cubic root of 1233940109 is about 1072.5841140427.

The spelling of 1233940109 in words is "one billion, two hundred thirty-three million, nine hundred forty thousand, one hundred nine".