20793490349 has 4 divisors (see below), whose sum is σ = 21277059936. Its totient is φ = 20309920764.

The previous prime is 20793490337. The next prime is 20793490369. The reversal of 20793490349 is 94309439702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20793490349 is a prime.

It is a super-2 number, since 2×20793490349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20793490297 and 20793490306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20793490369) 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, 241784729 + ... + 241784814.

It is an arithmetic number, because the mean of its divisors is an integer number (5319264984).

Almost surely, 2^20793490349 is an apocalyptic number.

It is an amenable number.

20793490349 is a deficient number, since it is larger than the sum of its proper divisors (483569587).

20793490349 is an equidigital number, since it uses as much as digits as its factorization.

20793490349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483569586.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 20793490349 in words is "twenty billion, seven hundred ninety-three million, four hundred ninety thousand, three hundred forty-nine".