18814124521 has 8 divisors (see below), whose sum is σ = 18909569600. Its totient is φ = 18718795440.

The previous prime is 18814124507. The next prime is 18814124557. The reversal of 18814124521 is 12542141881.

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 18814124521 - 2¹¹ = 18814122473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18814224521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305956 + ... + 362266.

It is an arithmetic number, because the mean of its divisors is an integer number (2363696200).

Almost surely, 2^18814124521 is an apocalyptic number.

It is an amenable number.

18814124521 is a deficient number, since it is larger than the sum of its proper divisors (95445079).

18814124521 is a wasteful number, since it uses less digits than its factorization.

18814124521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57999.

The product of its digits is 20480, while the sum is 37.

The spelling of 18814124521 in words is "eighteen billion, eight hundred fourteen million, one hundred twenty-four thousand, five hundred twenty-one".