20138830798 has 8 divisors (see below), whose sum is σ = 30320545320. Its totient is φ = 10031982360.

The previous prime is 20138830741. The next prime is 20138830799. The reversal of 20138830798 is 89703883102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20138830799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18715848 + ... + 18716923.

It is an arithmetic number, because the mean of its divisors is an integer number (3790068165).

Almost surely, 2^20138830798 is an apocalyptic number.

20138830798 is a deficient number, since it is larger than the sum of its proper divisors (10181714522).

20138830798 is a wasteful number, since it uses less digits than its factorization.

20138830798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37433042.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 20138830798 in words is "twenty billion, one hundred thirty-eight million, eight hundred thirty thousand, seven hundred ninety-eight".