1233220949 has 2 divisors, whose sum is σ = 1233220950. Its totient is φ = 1233220948.

The previous prime is 1233220943. The next prime is 1233221029. The reversal of 1233220949 is 9490223321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198198225 + 35022724 = 34615^2 + 5918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233220949 - 2²⁰ = 1232172373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233220943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616610474 + 616610475.

It is an arithmetic number, because the mean of its divisors is an integer number (616610475).

Almost surely, 2^1233220949 is an apocalyptic number.

It is an amenable number.

1233220949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233220949 is an equidigital number, since it uses as much as digits as its factorization.

1233220949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1233220949 is about 35117.2457490618. The cubic root of 1233220949 is about 1072.3757004987.

The spelling of 1233220949 in words is "one billion, two hundred thirty-three million, two hundred twenty thousand, nine hundred forty-nine".