18884531241 has 15 divisors (see below), whose sum is σ = 28212073351. Its totient is φ = 12588862968.

The previous prime is 18884531227. The next prime is 18884531293. The reversal of 18884531241 is 14213548881.

The square root of 18884531241 is 137421.

It is a perfect power (a square), and thus also a powerful number.

18884531241 is a `hidden beast` number, since 18 + 8 + 84 + 531 + 24 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8541641241 + 10342890000 = 92421^2 + 101700^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18884531241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18884531201) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1229155 + ... + 1244423.

Almost surely, 2^18884531241 is an apocalyptic number.

18884531241 is the 137421-st square number.

18884531241 is the 68711-st centered octagonal number.

It is an amenable number.

18884531241 is a deficient number, since it is larger than the sum of its proper divisors (9327542110).

18884531241 is an frugal number, since it uses more digits than its factorization.

18884531241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30550 (or 15272 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The spelling of 18884531241 in words is "eighteen billion, eight hundred eighty-four million, five hundred thirty-one thousand, two hundred forty-one".