18070803 has 8 divisors (see below), whose sum is σ = 26771600. Its totient is φ = 12047184.

The previous prime is 18070757. The next prime is 18070817. The reversal of 18070803 is 30807081.

It is not a de Polignac number, because 18070803 - 2²⁰ = 17022227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 669289 = 18070803 / (1 + 8 + 0 + 7 + 0 + 8 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18070603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334618 + ... + 334671.

It is an arithmetic number, because the mean of its divisors is an integer number (3346450).

Almost surely, 2^18070803 is an apocalyptic number.

18070803 is a deficient number, since it is larger than the sum of its proper divisors (8700797).

18070803 is an equidigital number, since it uses as much as digits as its factorization.

18070803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669298 (or 669292 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18070803 is about 4250.9767112982. The cubic root of 18070803 is about 262.4173127318.

Adding to 18070803 its reverse (30807081), we get a palindrome (48877884).

The spelling of 18070803 in words is "eighteen million, seventy thousand, eight hundred three".