33894478938 has 32 divisors (see below), whose sum is σ = 68803879680. Its totient is φ = 11129944320.

The previous prime is 33894478921. The next prime is 33894478939. The reversal of 33894478938 is 83987449833.

It is a super-2 number, since 2×33894478938² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33894478939) 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 15 ways as a sum of consecutive naturals, for example, 27606 + ... + 261822.

It is an arithmetic number, because the mean of its divisors is an integer number (2150121240).

Almost surely, 2^33894478938 is an apocalyptic number.

33894478938 is an abundant number, since it is smaller than the sum of its proper divisors (34909400742).

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

33894478938 is a wasteful number, since it uses less digits than its factorization.

33894478938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234582.

The product of its digits is 125411328, while the sum is 66.

The spelling of 33894478938 in words is "thirty-three billion, eight hundred ninety-four million, four hundred seventy-eight thousand, nine hundred thirty-eight".