20020929193 has 4 divisors (see below), whose sum is σ = 20398682628. Its totient is φ = 19643175760.

The previous prime is 20020929077. The next prime is 20020929211. The reversal of 20020929193 is 39192902002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39192902002 = 2 ⋅19596451001.

It can be written as a sum of positive squares in 2 ways, for example, as 5065595929 + 14955333264 = 71173^2 + 122292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020929193 - 2²⁹ = 19484058281 is a prime.

It is a super-2 number, since 2×20020929193² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020929493) 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, 188876638 + ... + 188876743.

It is an arithmetic number, because the mean of its divisors is an integer number (5099670657).

Almost surely, 2^20020929193 is an apocalyptic number.

It is an amenable number.

20020929193 is a deficient number, since it is larger than the sum of its proper divisors (377753435).

20020929193 is an equidigital number, since it uses as much as digits as its factorization.

20020929193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377753434.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 20020929193 in words is "twenty billion, twenty million, nine hundred twenty-nine thousand, one hundred ninety-three".