18506030749 has 8 divisors (see below), whose sum is σ = 18590820480. Its totient is φ = 18421302816.

The previous prime is 18506030747. The next prime is 18506030779. The reversal of 18506030749 is 94703060581.

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

It is a cyclic number.

It is not a de Polignac number, because 18506030749 - 2¹ = 18506030747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18506030743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649762 + ... + 677644.

It is an arithmetic number, because the mean of its divisors is an integer number (2323852560).

Almost surely, 2^18506030749 is an apocalyptic number.

It is an amenable number.

18506030749 is a deficient number, since it is larger than the sum of its proper divisors (84789731).

18506030749 is a wasteful number, since it uses less digits than its factorization.

18506030749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30899.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 18506030749 in words is "eighteen billion, five hundred six million, thirty thousand, seven hundred forty-nine".