18795040789 has 18 divisors (see below), whose sum is σ = 22409982402. Its totient is φ = 15717038400.

The previous prime is 18795040777. The next prime is 18795040843. The reversal of 18795040789 is 98704059781.

It can be written as a sum of positive squares in 3 ways, for example, as 1764 + 18795039025 = 42^2 + 137095^2 .

It is not a de Polignac number, because 18795040789 - 2¹¹ = 18795038741 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 (18795040739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31722 + ... + 196459.

Almost surely, 2^18795040789 is an apocalyptic number.

It is an amenable number.

18795040789 is a deficient number, since it is larger than the sum of its proper divisors (3614941613).

18795040789 is an equidigital number, since it uses as much as digits as its factorization.

18795040789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228277 (or 228229 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 18795040789 in words is "eighteen billion, seven hundred ninety-five million, forty thousand, seven hundred eighty-nine".