1738228109 has 2 divisors, whose sum is σ = 1738228110. Its totient is φ = 1738228108.

The previous prime is 1738228097. The next prime is 1738228147. The reversal of 1738228109 is 9018228371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1314280009 + 423948100 = 36253^2 + 20590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1738228109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1738228199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 869114054 + 869114055.

It is an arithmetic number, because the mean of its divisors is an integer number (869114055).

Almost surely, 2^1738228109 is an apocalyptic number.

It is an amenable number.

1738228109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1738228109 is an equidigital number, since it uses as much as digits as its factorization.

1738228109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1738228109 is about 41692.0629017083. The cubic root of 1738228109 is about 1202.3629617796.

The spelling of 1738228109 in words is "one billion, seven hundred thirty-eight million, two hundred twenty-eight thousand, one hundred nine".