20149230793 has 4 divisors (see below), whose sum is σ = 20433022848. Its totient is φ = 19865438740.

The previous prime is 20149230781. The next prime is 20149230817. The reversal of 20149230793 is 39703294102.

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 not a de Polignac number, because 20149230793 - 2¹³ = 20149222601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20149230743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141895921 + ... + 141896062.

It is an arithmetic number, because the mean of its divisors is an integer number (5108255712).

Almost surely, 2^20149230793 is an apocalyptic number.

It is an amenable number.

20149230793 is a deficient number, since it is larger than the sum of its proper divisors (283792055).

20149230793 is an equidigital number, since it uses as much as digits as its factorization.

20149230793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283792054.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 20149230793 in words is "twenty billion, one hundred forty-nine million, two hundred thirty thousand, seven hundred ninety-three".