1210133909 has 2 divisors, whose sum is σ = 1210133910. Its totient is φ = 1210133908.

The previous prime is 1210133893. The next prime is 1210133917. The reversal of 1210133909 is 9093310121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032658225 + 177475684 = 32135^2 + 13322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210133909 - 2⁴ = 1210133893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210633909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605066954 + 605066955.

It is an arithmetic number, because the mean of its divisors is an integer number (605066955).

Almost surely, 2^1210133909 is an apocalyptic number.

It is an amenable number.

1210133909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210133909 is an equidigital number, since it uses as much as digits as its factorization.

1210133909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1210133909 is about 34786.9790151430. The cubic root of 1210133909 is about 1065.6415448841.

The spelling of 1210133909 in words is "one billion, two hundred ten million, one hundred thirty-three thousand, nine hundred nine".