18736734041 has 4 divisors (see below), whose sum is σ = 18737037732. Its totient is φ = 18736430352.

The previous prime is 18736733993. The next prime is 18736734061. The reversal of 18736734041 is 14043763781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14043763781 = 283 ⋅49624607.

It can be written as a sum of positive squares in 2 ways, for example, as 1999878400 + 16736855641 = 44720^2 + 129371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18736734041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18736733983 and 18736734001.

It is not an unprimeable number, because it can be changed into a prime (18736734061) 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, 22670 + ... + 194903.

It is an arithmetic number, because the mean of its divisors is an integer number (4684259433).

Almost surely, 2^18736734041 is an apocalyptic number.

It is an amenable number.

18736734041 is a deficient number, since it is larger than the sum of its proper divisors (303691).

18736734041 is an equidigital number, since it uses as much as digits as its factorization.

18736734041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303690.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 18736734041 in words is "eighteen billion, seven hundred thirty-six million, seven hundred thirty-four thousand, forty-one".