1219140229 has 2 divisors, whose sum is σ = 1219140230. Its totient is φ = 1219140228.

The previous prime is 1219140211. The next prime is 1219140259. The reversal of 1219140229 is 9220419121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769785025 + 449355204 = 27745^2 + 21198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219140229 - 2⁷ = 1219140101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1219140229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219140259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609570114 + 609570115.

It is an arithmetic number, because the mean of its divisors is an integer number (609570115).

Almost surely, 2^1219140229 is an apocalyptic number.

It is an amenable number.

1219140229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219140229 is an equidigital number, since it uses as much as digits as its factorization.

1219140229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1219140229 is about 34916.1886379370. The cubic root of 1219140229 is about 1068.2786627257.

The spelling of 1219140229 in words is "one billion, two hundred nineteen million, one hundred forty thousand, two hundred twenty-nine".