18380005049 has 8 divisors (see below), whose sum is σ = 21036124608. Its totient is φ = 15731486640.

The previous prime is 18380005037. The next prime is 18380005051. The reversal of 18380005049 is 94050008381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18380005049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18380005849) 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 7 ways as a sum of consecutive naturals, for example, 1895102 + ... + 1904775.

It is an arithmetic number, because the mean of its divisors is an integer number (2629515576).

Almost surely, 2^18380005049 is an apocalyptic number.

It is an amenable number.

18380005049 is a deficient number, since it is larger than the sum of its proper divisors (2656119559).

18380005049 is an equidigital number, since it uses as much as digits as its factorization.

18380005049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800575.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 18380005049 in words is "eighteen billion, three hundred eighty million, five thousand, forty-nine".