1938283438 has 16 divisors (see below), whose sum is σ = 3578369760. Its totient is φ = 766793376.

The previous prime is 1938283433. The next prime is 1938283447. The reversal of 1938283438 is 8343828391.

It is a junction number, because it is equal to n+sod(n) for n = 1938283391 and 1938283400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938283433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5324773 + ... + 5325136.

It is an arithmetic number, because the mean of its divisors is an integer number (223648110).

Almost surely, 2^1938283438 is an apocalyptic number.

1938283438 is a deficient number, since it is larger than the sum of its proper divisors (1640086322).

1938283438 is a wasteful number, since it uses less digits than its factorization.

1938283438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649931.

The product of its digits is 995328, while the sum is 49.

The square root of 1938283438 is about 44025.9405123843. The cubic root of 1938283438 is about 1246.8257462201.

The spelling of 1938283438 in words is "one billion, nine hundred thirty-eight million, two hundred eighty-three thousand, four hundred thirty-eight".