1229020159 has 2 divisors, whose sum is σ = 1229020160. Its totient is φ = 1229020158.

The previous prime is 1229020147. The next prime is 1229020181. The reversal of 1229020159 is 9510209221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1229020159 - 2⁷ = 1229020031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1229020159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614510079 + 614510080.

It is an arithmetic number, because the mean of its divisors is an integer number (614510080).

Almost surely, 2^1229020159 is an apocalyptic number.

1229020159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229020159 is an equidigital number, since it uses as much as digits as its factorization.

1229020159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1229020159 is about 35057.3838014191. The cubic root of 1229020159 is about 1071.1566840585.

The spelling of 1229020159 in words is "one billion, two hundred twenty-nine million, twenty thousand, one hundred fifty-nine".