1800934229 has 2 divisors, whose sum is σ = 1800934230. Its totient is φ = 1800934228.

The previous prime is 1800934211. The next prime is 1800934273. The reversal of 1800934229 is 9224390081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1766100625 + 34833604 = 42025^2 + 5902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1800934229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1800934192 and 1800934201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1800934529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900467114 + 900467115.

It is an arithmetic number, because the mean of its divisors is an integer number (900467115).

Almost surely, 2^1800934229 is an apocalyptic number.

It is an amenable number.

1800934229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800934229 is an equidigital number, since it uses as much as digits as its factorization.

1800934229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1800934229 is about 42437.4154373237. The cubic root of 1800934229 is about 1216.6508134379.

The spelling of 1800934229 in words is "one billion, eight hundred million, nine hundred thirty-four thousand, two hundred twenty-nine".