18050916893 has 4 divisors (see below), whose sum is σ = 18108587868. Its totient is φ = 17993245920.

The previous prime is 18050916889. The next prime is 18050916913. The reversal of 18050916893 is 39861905081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39861905081 = 3581 ⋅11131501.

It can be written as a sum of positive squares in 2 ways, for example, as 280160644 + 17770756249 = 16738^2 + 133307^2 .

It is a cyclic number.

It is not a de Polignac number, because 18050916893 - 2² = 18050916889 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 (18050916853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28835018 + ... + 28835643.

It is an arithmetic number, because the mean of its divisors is an integer number (4527146967).

Almost surely, 2^18050916893 is an apocalyptic number.

It is an amenable number.

18050916893 is a deficient number, since it is larger than the sum of its proper divisors (57670975).

18050916893 is an equidigital number, since it uses as much as digits as its factorization.

18050916893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57670974.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 18050916893 in words is "eighteen billion, fifty million, nine hundred sixteen thousand, eight hundred ninety-three".