2163927838 has 4 divisors (see below), whose sum is σ = 3245891760. Its totient is φ = 1081963918.

The previous prime is 2163927833. The next prime is 2163927863. The reversal of 2163927838 is 8387293612.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2163927791 and 2163927800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163927833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540981958 + ... + 540981961.

It is an arithmetic number, because the mean of its divisors is an integer number (811472940).

Almost surely, 2^2163927838 is an apocalyptic number.

2163927838 is a deficient number, since it is larger than the sum of its proper divisors (1081963922).

2163927838 is a wasteful number, since it uses less digits than its factorization.

2163927838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081963921.

The product of its digits is 870912, while the sum is 49.

The square root of 2163927838 is about 46518.0377703101. The cubic root of 2163927838 is about 1293.4438831148.

The spelling of 2163927838 in words is "two billion, one hundred sixty-three million, nine hundred twenty-seven thousand, eight hundred thirty-eight".