18480793 has 4 divisors (see below), whose sum is σ = 18490240. Its totient is φ = 18471348.

The previous prime is 18480779. The next prime is 18480809. The reversal of 18480793 is 39708481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18480793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18480713) 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, 573 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (4622560).

Almost surely, 2^18480793 is an apocalyptic number.

It is an amenable number.

18480793 is a deficient number, since it is larger than the sum of its proper divisors (9447).

18480793 is an equidigital number, since it uses as much as digits as its factorization.

18480793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18480793 is about 4298.9292852988. The cubic root of 18480793 is about 264.3870632756.

It can be divided in two parts, 184807 and 93, that added together give a square (184900 = 430²).

The spelling of 18480793 in words is "eighteen million, four hundred eighty thousand, seven hundred ninety-three".