18070436843 has 4 divisors (see below), whose sum is σ = 18070835328. Its totient is φ = 18070038360.

The previous prime is 18070436833. The next prime is 18070436851. The reversal of 18070436843 is 34863407081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18070436843 - 2⁶ = 18070436779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18070436794 and 18070436803.

It is not an unprimeable number, because it can be changed into a prime (18070436833) 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, 120971 + ... + 225332.

It is an arithmetic number, because the mean of its divisors is an integer number (4517708832).

Almost surely, 2^18070436843 is an apocalyptic number.

18070436843 is a deficient number, since it is larger than the sum of its proper divisors (398485).

18070436843 is an equidigital number, since it uses as much as digits as its factorization.

18070436843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398484.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 18070436843 in words is "eighteen billion, seventy million, four hundred thirty-six thousand, eight hundred forty-three".