1938283199 has 4 divisors (see below), whose sum is σ = 1938703536. Its totient is φ = 1937862864.

The previous prime is 1938283189. The next prime is 1938283201. The reversal of 1938283199 is 9913828391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9913828391 = 23 ⋅431036017.

It is a cyclic number.

It is not a de Polignac number, because 1938283199 - 2⁴ = 1938283183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938283199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938283189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203174 + ... + 212499.

It is an arithmetic number, because the mean of its divisors is an integer number (484675884).

Almost surely, 2^1938283199 is an apocalyptic number.

1938283199 is a deficient number, since it is larger than the sum of its proper divisors (420337).

1938283199 is an equidigital number, since it uses as much as digits as its factorization.

1938283199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420336.

The product of its digits is 839808, while the sum is 53.

The square root of 1938283199 is about 44025.9377980754. The cubic root of 1938283199 is about 1246.8256949735.

The spelling of 1938283199 in words is "one billion, nine hundred thirty-eight million, two hundred eighty-three thousand, one hundred ninety-nine".