1938735163 has 2 divisors, whose sum is σ = 1938735164. Its totient is φ = 1938735162.

The previous prime is 1938735083. The next prime is 1938735187. The reversal of 1938735163 is 3615378391.

It is a strong prime.

It is an emirp because it is prime and its reverse (3615378391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1938735163 - 2¹⁷ = 1938604091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1938735563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969367581 + 969367582.

It is an arithmetic number, because the mean of its divisors is an integer number (969367582).

Almost surely, 2^1938735163 is an apocalyptic number.

1938735163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938735163 is an equidigital number, since it uses as much as digits as its factorization.

1938735163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 1938735163 is about 44031.0704275969. The cubic root of 1938735163 is about 1246.9225980017.

The spelling of 1938735163 in words is "one billion, nine hundred thirty-eight million, seven hundred thirty-five thousand, one hundred sixty-three".