1933109838 has 48 divisors (see below), whose sum is σ = 4590922752. Its totient is φ = 583002000.

The previous prime is 1933109821. The next prime is 1933109879. The reversal of 1933109838 is 8389013391.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1933109793 and 1933109802.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18643 + ... + 64913.

It is an arithmetic number, because the mean of its divisors is an integer number (95644224).

Almost surely, 2^1933109838 is an apocalyptic number.

1933109838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1933109838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295461376).

1933109838 is an abundant number, since it is smaller than the sum of its proper divisors (2657812914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1933109838 is a wasteful number, since it uses less digits than its factorization.

1933109838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46501 (or 46498 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1933109838 is about 43967.1449834988. The cubic root of 1933109838 is about 1245.7154295175.

The spelling of 1933109838 in words is "one billion, nine hundred thirty-three million, one hundred nine thousand, eight hundred thirty-eight".