1938834879 has 8 divisors (see below), whose sum is σ = 2721171840. Its totient is φ = 1224527256.

The previous prime is 1938834871. The next prime is 1938834881. The reversal of 1938834879 is 9784388391.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1938834879 - 2³ = 1938834871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938834871) 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 in 7 ways as a sum of consecutive naturals, for example, 17007267 + ... + 17007380.

It is an arithmetic number, because the mean of its divisors is an integer number (340146480).

Almost surely, 2^1938834879 is an apocalyptic number.

1938834879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1938834879 is a deficient number, since it is larger than the sum of its proper divisors (782336961).

1938834879 is a wasteful number, since it uses less digits than its factorization.

1938834879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34014669.

The product of its digits is 10450944, while the sum is 60.

The square root of 1938834879 is about 44032.2027498057. The cubic root of 1938834879 is about 1246.9439755136.

The spelling of 1938834879 in words is "one billion, nine hundred thirty-eight million, eight hundred thirty-four thousand, eight hundred seventy-nine".