20239193834 has 8 divisors (see below), whose sum is σ = 31099249188. Its totient is φ = 9872777440.

The previous prime is 20239193831. The next prime is 20239193903. The reversal of 20239193834 is 43839193202.

It can be written as a sum of positive squares in 2 ways, for example, as 20219418025 + 19775809 = 142195^2 + 4447^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20239193831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123409637 + ... + 123409800.

Almost surely, 2^20239193834 is an apocalyptic number.

20239193834 is a deficient number, since it is larger than the sum of its proper divisors (10860055354).

20239193834 is a wasteful number, since it uses less digits than its factorization.

20239193834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246819480.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 20239193834 in words is "twenty billion, two hundred thirty-nine million, one hundred ninety-three thousand, eight hundred thirty-four".