20019817118 has 8 divisors (see below), whose sum is σ = 34319686512. Its totient is φ = 8579921616.

The previous prime is 20019817093. The next prime is 20019817121. The reversal of 20019817118 is 81171891002.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714993455 + ... + 714993482.

It is an arithmetic number, because the mean of its divisors is an integer number (4289960814).

Almost surely, 2^20019817118 is an apocalyptic number.

20019817118 is a deficient number, since it is larger than the sum of its proper divisors (14299869394).

20019817118 is a wasteful number, since it uses less digits than its factorization.

20019817118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429986946.

The product of its (nonzero) digits is 8064, while the sum is 38.

The spelling of 20019817118 in words is "twenty billion, nineteen million, eight hundred seventeen thousand, one hundred eighteen".