20034188903 has 4 divisors (see below), whose sum is σ = 20034817440. Its totient is φ = 20033560368.

The previous prime is 20034188899. The next prime is 20034188969. The reversal of 20034188903 is 30988143002.

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

It is a cyclic number.

It is not a de Polignac number, because 20034188903 - 2² = 20034188899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20037188903) 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 3 ways as a sum of consecutive naturals, for example, 263750 + ... + 331107.

It is an arithmetic number, because the mean of its divisors is an integer number (5008704360).

Almost surely, 2^20034188903 is an apocalyptic number.

20034188903 is a deficient number, since it is larger than the sum of its proper divisors (628537).

20034188903 is an equidigital number, since it uses as much as digits as its factorization.

20034188903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628536.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 20034188903 in words is "twenty billion, thirty-four million, one hundred eighty-eight thousand, nine hundred three".