20163190493 has 8 divisors (see below), whose sum is σ = 21556536768. Its totient is φ = 18792874944.

The previous prime is 20163190477. The next prime is 20163190517. The reversal of 20163190493 is 39409136102.

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

It is not a de Polignac number, because 20163190493 - 2⁴ = 20163190477 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 (20163190423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5755871 + ... + 5759372.

It is an arithmetic number, because the mean of its divisors is an integer number (2694567096).

Almost surely, 2^20163190493 is an apocalyptic number.

It is an amenable number.

20163190493 is a deficient number, since it is larger than the sum of its proper divisors (1393346275).

20163190493 is a wasteful number, since it uses less digits than its factorization.

20163190493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11515363.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 20163190493 in words is "twenty billion, one hundred sixty-three million, one hundred ninety thousand, four hundred ninety-three".